856576684 has 12 divisors (see below), whose sum is σ = 1533870184. Its totient is φ = 418328064.

The previous prime is 856576681. The next prime is 856576687. The reversal of 856576684 is 486675658.

It is an interprime number because it is at equal distance from previous prime (856576681) and next prime (856576687).

It is not an unprimeable number, because it can be changed into a prime (856576681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489877 + ... + 2490220.

Almost surely, 2^856576684 is an apocalyptic number.

It is an amenable number.

856576684 is a deficient number, since it is larger than the sum of its proper divisors (677293500).

856576684 is a wasteful number, since it uses less digits than its factorization.

856576684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980144 (or 4980142 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The square root of 856576684 is about 29267.3313440088. The cubic root of 856576684 is about 949.7050548834.

The spelling of 856576684 in words is "eight hundred fifty-six million, five hundred seventy-six thousand, six hundred eighty-four".