56688744 has 128 divisors (see below), whose sum is σ = 179159040. Its totient is φ = 14564352.

The previous prime is 56688733. The next prime is 56688757. The reversal of 56688744 is 44788665.

It is a super-2 number, since 2×56688744² = 6427227392595072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56688693 and 56688702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65257 + ... + 66119.

It is an arithmetic number, because the mean of its divisors is an integer number (1399680).

Almost surely, 2^56688744 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 56688744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89579520).

56688744 is an abundant number, since it is smaller than the sum of its proper divisors (122470296).

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

56688744 is a wasteful number, since it uses less digits than its factorization.

56688744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 915 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 56688744 is about 7529.1927854186. The cubic root of 56688744 is about 384.1483259460.

The spelling of 56688744 in words is "fifty-six million, six hundred eighty-eight thousand, seven hundred forty-four".