56976640 has 72 divisors (see below), whose sum is σ = 155998080. Its totient is φ = 19531776.

The previous prime is 56976527. The next prime is 56976653. The reversal of 56976640 is 4667965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5781 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (2166640).

Almost surely, 2^56976640 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 56976640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77999040).

56976640 is an abundant number, since it is smaller than the sum of its proper divisors (99021440).

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

56976640 is an equidigital number, since it uses as much as digits as its factorization.

56976640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 56976640 is about 7548.2872229400. The cubic root of 56976640 is about 384.7975322678.

The spelling of 56976640 in words is "fifty-six million, nine hundred seventy-six thousand, six hundred forty".