56647660 has 12 divisors (see below), whose sum is σ = 118960128. Its totient is φ = 22659056.

The previous prime is 56647649. The next prime is 56647663. The reversal of 56647660 is 6674665.

It is not an unprimeable number, because it can be changed into a prime (56647663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416172 + ... + 1416211.

It is an arithmetic number, because the mean of its divisors is an integer number (9913344).

Almost surely, 2^56647660 is an apocalyptic number.

It is an amenable number.

56647660 is an abundant number, since it is smaller than the sum of its proper divisors (62312468).

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

56647660 is a wasteful number, since it uses less digits than its factorization.

56647660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832392 (or 2832390 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 56647660 is about 7526.4639771941. The cubic root of 56647660 is about 384.0555023218.

The spelling of 56647660 in words is "fifty-six million, six hundred forty-seven thousand, six hundred sixty".