772889057 has 2 divisors, whose sum is σ = 772889058. Its totient is φ = 772889056.

The previous prime is 772889027. The next prime is 772889077. The reversal of 772889057 is 750988277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772617616 + 271441 = 27796^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 772889057 - 2⁸ = 772888801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (772889027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386444528 + 386444529.

It is an arithmetic number, because the mean of its divisors is an integer number (386444529).

Almost surely, 2^772889057 is an apocalyptic number.

It is an amenable number.

772889057 is a deficient number, since it is larger than the sum of its proper divisors (1).

772889057 is an equidigital number, since it uses as much as digits as its factorization.

772889057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The square root of 772889057 is about 27800.8823061427. The cubic root of 772889057 is about 917.7105395811.

The spelling of 772889057 in words is "seven hundred seventy-two million, eight hundred eighty-nine thousand, fifty-seven".