556501664 has 24 divisors (see below), whose sum is σ = 1160061588. Its totient is φ = 261882880.

The previous prime is 556501661. The next prime is 556501669. The reversal of 556501664 is 466105655.

It can be written as a sum of positive squares in 2 ways, for example, as 441840400 + 114661264 = 21020^2 + 10708^2 .

It is not an unprimeable number, because it can be changed into a prime (556501661) 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, 510947 + ... + 512034.

Almost surely, 2^556501664 is an apocalyptic number.

It is an amenable number.

556501664 is an abundant number, since it is smaller than the sum of its proper divisors (603559924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556501664 is a wasteful number, since it uses less digits than its factorization.

556501664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023008 (or 1023000 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 556501664 is about 23590.2874929493. The cubic root of 556501664 is about 822.5370876007.

The spelling of 556501664 in words is "five hundred fifty-six million, five hundred one thousand, six hundred sixty-four".