56623320 has 256 divisors, whose sum is σ = 210672000. Its totient is φ = 13436928.

The previous prime is 56623319. The next prime is 56623349. The reversal of 56623320 is 2332665.

56623320 is a `hidden beast` number, since 5 + 6 + 623 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 519426 + ... + 519534.

Almost surely, 2^56623320 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 56623320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105336000).

56623320 is an abundant number, since it is smaller than the sum of its proper divisors (154048680).

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

56623320 is a wasteful number, since it uses less digits than its factorization.

56623320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 56623320 is about 7524.8468422952. The cubic root of 56623320 is about 384.0004882806. Note that the first 3 decimals are identical.

Adding to 56623320 its reverse (2332665), we get a palindrome (58955985).

The spelling of 56623320 in words is "fifty-six million, six hundred twenty-three thousand, three hundred twenty".