56680990 has 32 divisors (see below), whose sum is σ = 107892000. Its totient is φ = 21379968.

The previous prime is 56680979. The next prime is 56680991. The reversal of 56680990 is 9908665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56680991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50556 + ... + 51664.

It is an arithmetic number, because the mean of its divisors is an integer number (3371625).

Almost surely, 2^56680990 is an apocalyptic number.

56680990 is a deficient number, since it is larger than the sum of its proper divisors (51211010).

56680990 is a wasteful number, since it uses less digits than its factorization.

56680990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 56680990 is about 7528.6778387709. The cubic root of 56680990 is about 384.1308102881.

The spelling of 56680990 in words is "fifty-six million, six hundred eighty thousand, nine hundred ninety".