56604640 has 48 divisors (see below), whose sum is σ = 134310960. Its totient is φ = 22543360.

The previous prime is 56604631. The next prime is 56604643. The reversal of 56604640 is 4640665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56604643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44331 + ... + 45589.

It is an arithmetic number, because the mean of its divisors is an integer number (2798145).

Almost surely, 2^56604640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56604640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67155480).

56604640 is an abundant number, since it is smaller than the sum of its proper divisors (77706320).

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

56604640 is a wasteful number, since it uses less digits than its factorization.

56604640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 56604640 is about 7523.6055186327. The cubic root of 56604640 is about 383.9582564577.

The spelling of 56604640 in words is "fifty-six million, six hundred four thousand, six hundred forty".