56619980 has 24 divisors (see below), whose sum is σ = 119151312. Its totient is φ = 22600512.

The previous prime is 56619973. The next prime is 56619989. The reversal of 56619980 is 8991665.

It is not an unprimeable number, because it can be changed into a prime (56619989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7754 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (4964638).

Almost surely, 2^56619980 is an apocalyptic number.

It is an amenable number.

56619980 is an abundant number, since it is smaller than the sum of its proper divisors (62531332).

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

56619980 is a wasteful number, since it uses less digits than its factorization.

56619980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945 (or 5943 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 56619980 is about 7524.6249075951. The cubic root of 56619980 is about 383.9929378765.

The spelling of 56619980 in words is "fifty-six million, six hundred nineteen thousand, nine hundred eighty".