56389663 has 32 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 44766720.

The previous prime is 56389657. The next prime is 56389667. The reversal of 56389663 is 36698365.

It is a cyclic number.

It is not a de Polignac number, because 56389663 - 2²⁵ = 22835231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56389667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209493 + ... + 209761.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^56389663 is an apocalyptic number.

56389663 is a deficient number, since it is larger than the sum of its proper divisors (13594337).

56389663 is a wasteful number, since it uses less digits than its factorization.

56389663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375.

The product of its digits is 699840, while the sum is 46.

The square root of 56389663 is about 7509.3050943479. The cubic root of 56389663 is about 383.4715654377.

The spelling of 56389663 in words is "fifty-six million, three hundred eighty-nine thousand, six hundred sixty-three".