56656716 has 72 divisors (see below), whose sum is σ = 145136880. Its totient is φ = 17201280.

The previous prime is 56656709. The next prime is 56656729. The reversal of 56656716 is 61765665.

Its product of digits (226800) is a multiple of the sum of its prime factors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1827621 + ... + 1827651.

It is an arithmetic number, because the mean of its divisors is an integer number (2015790).

Almost surely, 2^56656716 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 56656716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72568440).

56656716 is an abundant number, since it is smaller than the sum of its proper divisors (88480164).

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

56656716 is a wasteful number, since it uses less digits than its factorization.

56656716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 53 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 56656716 is about 7527.0655636842. The cubic root of 56656716 is about 384.0759669583.

The spelling of 56656716 in words is "fifty-six million, six hundred fifty-six thousand, seven hundred sixteen".