56490831684 has 81 divisors (see below), whose sum is σ = 166139303967. Its totient is φ = 16137385488.

The previous prime is 56490831671. The next prime is 56490831689. The reversal of 56490831684 is 48613809465.

The square root of 56490831684 is 237678.

It is a perfect power (a square), and thus also a powerful number.

It is a self number, because there is not a number n which added to its sum of digits gives 56490831684.

It is not an unprimeable number, because it can be changed into a prime (56490831689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9979647 + ... + 9985305.

Almost surely, 2^56490831684 is an apocalyptic number.

56490831684 is the 237678-th square number.

It is an amenable number.

56490831684 is an abundant number, since it is smaller than the sum of its proper divisors (109648472283).

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

56490831684 is an equidigital number, since it uses as much as digits as its factorization.

56490831684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11342 (or 5671 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 56490831684 in words is "fifty-six billion, four hundred ninety million, eight hundred thirty-one thousand, six hundred eighty-four".