56990866 has 16 divisors (see below), whose sum is σ = 86708160. Its totient is φ = 28090800.

The previous prime is 56990833. The next prime is 56990909. The reversal of 56990866 is 66809965.

56990866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 61555 + ... + 62473.

It is an arithmetic number, because the mean of its divisors is an integer number (5419260).

Almost surely, 2^56990866 is an apocalyptic number.

56990866 is a deficient number, since it is larger than the sum of its proper divisors (29717294).

56990866 is a wasteful number, since it uses less digits than its factorization.

56990866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 56990866 is about 7549.2294971076. The cubic root of 56990866 is about 384.8295551820.

The spelling of 56990866 in words is "fifty-six million, nine hundred ninety thousand, eight hundred sixty-six".