56565663 has 16 divisors (see below), whose sum is σ = 94031616. Its totient is φ = 29384640.

The previous prime is 56565617. The next prime is 56565667. The reversal of 56565663 is 36656565.

It is not a de Polignac number, because 56565663 - 2⁶ = 56565599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565667) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 122206 + ... + 122667.

It is an arithmetic number, because the mean of its divisors is an integer number (5876976).

Almost surely, 2^56565663 is an apocalyptic number.

56565663 is a deficient number, since it is larger than the sum of its proper divisors (37465953).

56565663 is a wasteful number, since it uses less digits than its factorization.

56565663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244894.

The product of its digits is 486000, while the sum is 42.

The square root of 56565663 is about 7521.0147586612. The cubic root of 56565663 is about 383.8701071630.

The spelling of 56565663 in words is "fifty-six million, five hundred sixty-five thousand, six hundred sixty-three".