56646036 has 18 divisors (see below), whose sum is σ = 143188682. Its totient is φ = 18882000.

The previous prime is 56646017. The next prime is 56646041. The reversal of 56646036 is 63064665.

56646036 is a `hidden beast` number, since 5 + 6 + 646 + 0 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47610000 + 9036036 = 6900^2 + 3006^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1573501 = 56646036 / (5 + 6 + 6 + 4 + 6 + 0 + 3 + 6).

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 5 ways as a sum of consecutive naturals, for example, 786715 + ... + 786786.

Almost surely, 2^56646036 is an apocalyptic number.

It is an amenable number.

56646036 is an abundant number, since it is smaller than the sum of its proper divisors (86542646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56646036 is a wasteful number, since it uses less digits than its factorization.

56646036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573511 (or 1573506 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 56646036 is about 7526.3560904331. The cubic root of 56646036 is about 384.0518321961.

The spelling of 56646036 in words is "fifty-six million, six hundred forty-six thousand, thirty-six".