556890665 has 32 divisors (see below), whose sum is σ = 729907200. Its totient is φ = 406330560.

The previous prime is 556890623. The next prime is 556890679. The reversal of 556890665 is 566098655.

It is not a de Polignac number, because 556890665 - 2⁶ = 556890601 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 774176 + ... + 774894.

It is an arithmetic number, because the mean of its divisors is an integer number (22809600).

Almost surely, 2^556890665 is an apocalyptic number.

It is an amenable number.

556890665 is a deficient number, since it is larger than the sum of its proper divisors (173016535).

556890665 is a wasteful number, since it uses less digits than its factorization.

556890665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The square root of 556890665 is about 23598.5309924156. The cubic root of 556890665 is about 822.7286972253.

The spelling of 556890665 in words is "five hundred fifty-six million, eight hundred ninety thousand, six hundred sixty-five".