56965869 has 16 divisors (see below), whose sum is σ = 85267840. Its totient is φ = 37584000.

The previous prime is 56965859. The next prime is 56965891. The reversal of 56965869 is 96856965.

56965869 is a `hidden beast` number, since 56 + 9 + 6 + 586 + 9 = 666.

It is not a de Polignac number, because 56965869 - 2²⁰ = 55917293 is a prime.

It is a super-2 number, since 2×56965869² = 6490220461850322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56965859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8257 + ... + 13494.

It is an arithmetic number, because the mean of its divisors is an integer number (5329240).

Almost surely, 2^56965869 is an apocalyptic number.

It is an amenable number.

56965869 is a deficient number, since it is larger than the sum of its proper divisors (28301971).

56965869 is a wasteful number, since it uses less digits than its factorization.

56965869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857 (or 21851 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 56965869 is about 7547.5737161024. The cubic root of 56965869 is about 384.7732830584.

The spelling of 56965869 in words is "fifty-six million, nine hundred sixty-five thousand, eight hundred sixty-nine".