56668620 has 48 divisors (see below), whose sum is σ = 163795968. Its totient is φ = 14623680.

The previous prime is 56668613. The next prime is 56668627. The reversal of 56668620 is 2686665.

It is an interprime number because it is at equal distance from previous prime (56668613) and next prime (56668627).

It is a super-2 number, since 2×56668620² = 6422664985408800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56668627) 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, 13374 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (3412416).

Almost surely, 2^56668620 is an apocalyptic number.

It is an amenable number.

56668620 is an abundant number, since it is smaller than the sum of its proper divisors (107127348).

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

56668620 is a wasteful number, since it uses less digits than its factorization.

56668620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30510 (or 30508 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 56668620 is about 7527.8562685535. The cubic root of 56668620 is about 384.1028641528.

The spelling of 56668620 in words is "fifty-six million, six hundred sixty-eight thousand, six hundred twenty".