872774657 has 2 divisors, whose sum is σ = 872774658. Its totient is φ = 872774656.

The previous prime is 872774627. The next prime is 872774689. The reversal of 872774657 is 756477278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839608576 + 33166081 = 28976^2 + 5759^2 .

It is a cyclic number.

It is not a de Polignac number, because 872774657 - 2²⁶ = 805665793 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 872774599 and 872774608.

It is not a weakly prime, because it can be changed into another prime (872774627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436387328 + 436387329.

It is an arithmetic number, because the mean of its divisors is an integer number (436387329).

Almost surely, 2^872774657 is an apocalyptic number.

It is an amenable number.

872774657 is a deficient number, since it is larger than the sum of its proper divisors (1).

872774657 is an equidigital number, since it uses as much as digits as its factorization.

872774657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4609920, while the sum is 53.

The square root of 872774657 is about 29542.7598067615. The cubic root of 872774657 is about 955.6540595892.

The spelling of 872774657 in words is "eight hundred seventy-two million, seven hundred seventy-four thousand, six hundred fifty-seven".