56404636 has 12 divisors (see below), whose sum is σ = 99220912. Its totient is φ = 28055808.

The previous prime is 56404633. The next prime is 56404661. The reversal of 56404636 is 63640465.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56404631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35760 + ... + 37303.

Almost surely, 2^56404636 is an apocalyptic number.

It is an amenable number.

56404636 is a deficient number, since it is larger than the sum of its proper divisors (42816276).

56404636 is a wasteful number, since it uses less digits than its factorization.

56404636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73260 (or 73258 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 56404636 is about 7510.3019912651. The cubic root of 56404636 is about 383.5055031686.

The spelling of 56404636 in words is "fifty-six million, four hundred four thousand, six hundred thirty-six".