56639992 has 16 divisors (see below), whose sum is σ = 107253000. Its totient is φ = 28039200.

The previous prime is 56639981. The next prime is 56640011. The reversal of 56639992 is 29993665.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 34242 + ... + 35857.

Almost surely, 2^56639992 is an apocalyptic number.

It is an amenable number.

56639992 is a deficient number, since it is larger than the sum of its proper divisors (50613008).

56639992 is a wasteful number, since it uses less digits than its factorization.

56639992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70206 (or 70202 counting only the distinct ones).

The product of its digits is 787320, while the sum is 49.

The square root of 56639992 is about 7525.9545573967. The cubic root of 56639992 is about 384.0381725652.

The spelling of 56639992 in words is "fifty-six million, six hundred thirty-nine thousand, nine hundred ninety-two".