556979656 has 16 divisors (see below), whose sum is σ = 1044788940. Its totient is φ = 278369280.

The previous prime is 556979627. The next prime is 556979663. The reversal of 556979656 is 656979655.

It can be written as a sum of positive squares in 2 ways, for example, as 293436900 + 263542756 = 17130^2 + 16234^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 556979656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6360 + ... + 33976.

Almost surely, 2^556979656 is an apocalyptic number.

It is an amenable number.

556979656 is a deficient number, since it is larger than the sum of its proper divisors (487809284).

556979656 is a wasteful number, since it uses less digits than its factorization.

556979656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30144 (or 30140 counting only the distinct ones).

The product of its digits is 15309000, while the sum is 58.

The square root of 556979656 is about 23600.4164370038. The cubic root of 556979656 is about 822.7725188433.

Subtracting 556979656 from its reverse (656979655), we obtain a palindrome (99999999).

The spelling of 556979656 in words is "five hundred fifty-six million, nine hundred seventy-nine thousand, six hundred fifty-six".