The leaders of Egypt in favor of democracy have been urging fans to celebrate a week since the fall of Hosni Mubarak with a huge march through the capital, Cairo.
The organizers predicted a million people would become a demonstration of "protect the revolution and its demands" as a Twitter message to put it.
Supporters of former president also planned a counter-march.
Correspondents say that life is still not back to normal as the interim military government is exercising power.
Mr. Mubarak, resigned last Friday after 30 years in office, yielding to pressure from pro-democracy demonstrators occupied Tahrir Square, downtown Cairo for more than two weeks.
Since then he has been living with his family in the town of Sharm el-Sheikh.
Anti-corruption activists have been pressuring prosecutors to open an investigation into the assets of the Mubarak family, put at anywhere from $ 1bn to $ 70 billion.
On Thursday, the new Egyptian authorities arrested three of his former ministers for corruption, including the feared former Interior Minister Habib el Adly, and steel tycoon Ahmed Ezz, a close ally of Mubarak. All four denied the accusations.
"New Egypt"
Connected to Egyptian media has been urged to leave Friday's planned march, which must begin after lunch Muslim prayers.
"We will welcome all the new Egypt," wrote one user, Laila, on Facebook.
"A new country that began in Tahrir Square. A country of unity, peace, freedom and justice for all."
Other groups have planned a simultaneous demonstration to "apologize" to Mubarak for the way he was overthrown and recognize their achievements in almost 30 years in power, reports Reuters news agency.
Organizers said Mubarak supporters wearing black, with protesters in the white victory.
Demonstrations are also likely in the port city of Alexandria.
An Islamic website, said the Egyptian cleric Sheik Yousef al-Qaradawi, famous for his weekly appearances on television al-Jazeera, could speak in Tahrir Square.
Mr Qaradawi, who arrived at Cairo airport on Thursday, is expected to deliver a sermon saying the Egyptians of the importance of their role in building a free and democratic society.
"Nothing, however '
Life in Egypt remains disrupted, with tanks in the streets of Cairo, the banks closed, strikes and closed schools.
The interim government, or the Supreme Military Council, pledged to "put things back on track" on Wednesday, but asked in return for the Egyptians to help them.
"The armed forces have no ambitions for the future and wants to hand over power to civilians when parties are strong so they do not close," said spokesman Ismail ETMA General on state television.
An opposition leader, former UN diplomat, Mohamed ElBaradei, told the BBC the protesters needed to keep the pressure on the army to carry out reforms.
"I have not seen any of the requirements of the peaceful revolution that took place a couple of weeks with millions of people on the street performing," he said.
"All we see is concise military bulletins every few days, saying this is what will happen next week, this is what will happen next week. But what is the plan? How do we go through transition, which is crucial for the future - do not know. "
