56866865 has 16 divisors (see below), whose sum is σ = 76847616. Its totient is φ = 40022400.

The previous prime is 56866861. The next prime is 56866889.

56866865 is nontrivially palindromic in base 10.

56866865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56866865 - 2² = 56866861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56866861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14972 + ... + 18381.

It is an arithmetic number, because the mean of its divisors is an integer number (4802976).

Almost surely, 2^56866865 is an apocalyptic number.

56866865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56866865 is a deficient number, since it is larger than the sum of its proper divisors (19980751).

56866865 is a wasteful number, since it uses less digits than its factorization.

56866865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33400.

The product of its digits is 2073600, while the sum is 50.

The square root of 56866865 is about 7541.0121999636. The cubic root of 56866865 is about 384.5502478463.

The spelling of 56866865 in words is "fifty-six million, eight hundred sixty-six thousand, eight hundred sixty-five".