875642657 has 2 divisors, whose sum is σ = 875642658. Its totient is φ = 875642656.

The previous prime is 875642641. The next prime is 875642689. The reversal of 875642657 is 756246578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 875627281 + 15376 = 29591^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 875642657 - 2⁴ = 875642641 is a prime.

It is not a weakly prime, because it can be changed into another prime (875642057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437821328 + 437821329.

It is an arithmetic number, because the mean of its divisors is an integer number (437821329).

Almost surely, 2^875642657 is an apocalyptic number.

It is an amenable number.

875642657 is a deficient number, since it is larger than the sum of its proper divisors (1).

875642657 is an equidigital number, since it uses as much as digits as its factorization.

875642657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 50.

The square root of 875642657 is about 29591.2598075851. The cubic root of 875642657 is about 956.6996976270.

The spelling of 875642657 in words is "eight hundred seventy-five million, six hundred forty-two thousand, six hundred fifty-seven".