56660736 has 144 divisors (see below), whose sum is σ = 173658240. Its totient is φ = 16220160.

The previous prime is 56660719. The next prime is 56660741. The reversal of 56660736 is 63706665.

It is a junction number, because it is equal to n+sod(n) for n = 56660694 and 56660703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160336 + ... + 160688.

It is an arithmetic number, because the mean of its divisors is an integer number (1205960).

Almost surely, 2^56660736 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 56660736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86829120).

56660736 is an abundant number, since it is smaller than the sum of its proper divisors (116997504).

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

56660736 is a wasteful number, since it uses less digits than its factorization.

56660736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 56660736 is about 7527.3325952823. The cubic root of 56660736 is about 384.0850506055.

The spelling of 56660736 in words is "fifty-six million, six hundred sixty thousand, seven hundred thirty-six".