56668563 has 24 divisors (see below), whose sum is σ = 93746016. Its totient is φ = 32313600.

The previous prime is 56668561. The next prime is 56668597. The reversal of 56668563 is 36586665.

It is not a de Polignac number, because 56668563 - 2¹ = 56668561 is a prime.

It is a super-2 number, since 2×56668563² = 6422652064969938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56668561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54993 + ... + 56013.

It is an arithmetic number, because the mean of its divisors is an integer number (3906084).

Almost surely, 2^56668563 is an apocalyptic number.

56668563 is a deficient number, since it is larger than the sum of its proper divisors (37077453).

56668563 is a wasteful number, since it uses less digits than its factorization.

56668563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1912 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 56668563 is about 7527.8524826141. The cubic root of 56668563 is about 384.1027353698.

The spelling of 56668563 in words is "fifty-six million, six hundred sixty-eight thousand, five hundred sixty-three".