860904256 has 14 divisors (see below), whose sum is σ = 1708357010. Its totient is φ = 430452096.

The previous prime is 860904251. The next prime is 860904263. The reversal of 860904256 is 652409068.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 808833600 + 52070656 = 28440^2 + 7216^2 .

It is a super-2 number, since 2×860904256² = 1482312275997827072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860904251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725751 + ... + 6725878.

Almost surely, 2^860904256 is an apocalyptic number.

It is an amenable number.

860904256 is a deficient number, since it is larger than the sum of its proper divisors (847452754).

860904256 is a wasteful number, since it uses less digits than its factorization.

860904256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451641 (or 13451631 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 860904256 is about 29341.1699834891. The cubic root of 860904256 is about 951.3017264977.

The spelling of 860904256 in words is "eight hundred sixty million, nine hundred four thousand, two hundred fifty-six".