56800865 has 16 divisors (see below), whose sum is σ = 74756736. Its totient is φ = 41088000.

The previous prime is 56800853. The next prime is 56800889.

56800865 = 895² + 896² + ... + 960².

56800865 is nontrivially palindromic in base 10.

56800865 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 56800865 - 2⁸ = 56800609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 7940 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (4672296).

Almost surely, 2^56800865 is an apocalyptic number.

56800865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56800865 is a deficient number, since it is larger than the sum of its proper divisors (17955871).

56800865 is a wasteful number, since it uses less digits than its factorization.

56800865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 56800865 is about 7536.6348591397. The cubic root of 56800865 is about 384.4014198686.

The spelling of 56800865 in words is "fifty-six million, eight hundred thousand, eight hundred sixty-five".