475697777 has 6 divisors (see below), whose sum is σ = 487019682. Its totient is φ = 464633232.

The previous prime is 475697771. The next prime is 475697837. The reversal of 475697777 is 777796574.

It can be written as a sum of positive squares in only one way, i.e., 300294241 + 175403536 = 17329^2 + 13244^2 .

It is not a de Polignac number, because 475697777 - 2¹⁸ = 475435633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475697771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126788 + ... + 130485.

It is an arithmetic number, because the mean of its divisors is an integer number (81169947).

Almost surely, 2^475697777 is an apocalyptic number.

It is an amenable number.

475697777 is a deficient number, since it is larger than the sum of its proper divisors (11321905).

475697777 is an equidigital number, since it uses as much as digits as its factorization.

475697777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257359 (or 257316 counting only the distinct ones).

The product of its digits is 18151560, while the sum is 59.

The square root of 475697777 is about 21810.4969452784. The cubic root of 475697777 is about 780.6272496705.

The spelling of 475697777 in words is "four hundred seventy-five million, six hundred ninety-seven thousand, seven hundred seventy-seven".