56639675 has 6 divisors (see below), whose sum is σ = 70233228. Its totient is φ = 45311720.

The previous prime is 56639663. The next prime is 56639707. The reversal of 56639675 is 57693665.

It is not a de Polignac number, because 56639675 - 2⁸ = 56639419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1132769 + ... + 1132818.

It is an arithmetic number, because the mean of its divisors is an integer number (11705538).

Almost surely, 2^56639675 is an apocalyptic number.

56639675 is a deficient number, since it is larger than the sum of its proper divisors (13593553).

56639675 is a wasteful number, since it uses less digits than its factorization.

56639675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265597 (or 2265592 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 47.

The square root of 56639675 is about 7525.9334969158. The cubic root of 56639675 is about 384.0374561083.

The spelling of 56639675 in words is "fifty-six million, six hundred thirty-nine thousand, six hundred seventy-five".