56643608 has 48 divisors (see below), whose sum is σ = 124282800. Its totient is φ = 24131520.

The previous prime is 56643589. The next prime is 56643659. The reversal of 56643608 is 80634665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89453 + ... + 90083.

It is an arithmetic number, because the mean of its divisors is an integer number (2589225).

Almost surely, 2^56643608 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 56643608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62141400).

56643608 is an abundant number, since it is smaller than the sum of its proper divisors (67639192).

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

56643608 is a wasteful number, since it uses less digits than its factorization.

56643608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 56643608 is about 7526.1947888691. The cubic root of 56643608 is about 384.0463449562.

The spelling of 56643608 in words is "fifty-six million, six hundred forty-three thousand, six hundred eight".