556907656 has 32 divisors (see below), whose sum is σ = 1071993600. Its totient is φ = 271140480.

The previous prime is 556907581. The next prime is 556907699. The reversal of 556907656 is 656709655.

It is a happy number.

It is a super-2 number, since 2×556907656² = 620292274622828672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40101 + ... + 52171.

It is an arithmetic number, because the mean of its divisors is an integer number (33499800).

Almost surely, 2^556907656 is an apocalyptic number.

It is an amenable number.

556907656 is a deficient number, since it is larger than the sum of its proper divisors (515085944).

556907656 is a wasteful number, since it uses less digits than its factorization.

556907656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12229 (or 12225 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 49.

The square root of 556907656 is about 23598.8909908919. The cubic root of 556907656 is about 822.7370644220.

The spelling of 556907656 in words is "five hundred fifty-six million, nine hundred seven thousand, six hundred fifty-six".