556831864 has 16 divisors (see below), whose sum is σ = 1044640800. Its totient is φ = 278260992.

The previous prime is 556831859. The next prime is 556831867. The reversal of 556831864 is 468138655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556831867) 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 in 3 ways as a sum of consecutive naturals, for example, 3312 + ... + 33535.

It is an arithmetic number, because the mean of its divisors is an integer number (65290050).

Almost surely, 2^556831864 is an apocalyptic number.

It is an amenable number.

556831864 is a deficient number, since it is larger than the sum of its proper divisors (487808936).

556831864 is a wasteful number, since it uses less digits than its factorization.

556831864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38742 (or 38738 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 556831864 is about 23597.2850980785. The cubic root of 556831864 is about 822.6997394328.

The spelling of 556831864 in words is "five hundred fifty-six million, eight hundred thirty-one thousand, eight hundred sixty-four".