56565630 has 96 divisors (see below), whose sum is σ = 169928928. Its totient is φ = 12902400.

The previous prime is 56565617. The next prime is 56565667. The reversal of 56565630 is 3656565.

It is a happy number.

56565630 is a `hidden beast` number, since 565 + 65 + 6 + 30 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15150 + ... + 18510.

It is an arithmetic number, because the mean of its divisors is an integer number (1770093).

Almost surely, 2^56565630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56565630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84964464).

56565630 is an abundant number, since it is smaller than the sum of its proper divisors (113363298).

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

56565630 is a wasteful number, since it uses less digits than its factorization.

56565630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402 (or 3399 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 56565630 is about 7521.0125648080. The cubic root of 56565630 is about 383.8700325140.

The spelling of 56565630 in words is "fifty-six million, five hundred sixty-five thousand, six hundred thirty".