556660556 has 36 divisors (see below), whose sum is σ = 1031808960. Its totient is φ = 262738080.

The previous prime is 556660553. The next prime is 556660561. The reversal of 556660556 is 655066655.

It is not an unprimeable number, because it can be changed into a prime (556660553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561221 + ... + 562211.

It is an arithmetic number, because the mean of its divisors is an integer number (28661360).

Almost surely, 2^556660556 is an apocalyptic number.

It is an amenable number.

556660556 is a deficient number, since it is larger than the sum of its proper divisors (475148404).

556660556 is a wasteful number, since it uses less digits than its factorization.

556660556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 556660556 is about 23593.6549945107. The cubic root of 556660556 is about 822.6153635728.

The spelling of 556660556 in words is "five hundred fifty-six million, six hundred sixty thousand, five hundred fifty-six".