86507865 has 32 divisors (see below), whose sum is σ = 156412800. Its totient is φ = 45351360.

The previous prime is 86507857. The next prime is 86507867. The reversal of 86507865 is 56870568.

86507865 is a `hidden beast` number, since 86 + 507 + 8 + 65 = 666.

It is not a de Polignac number, because 86507865 - 2³ = 86507857 is a prime.

It is a super-2 number, since 2×86507865² = 14967221413716450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 86507865.

It is not an unprimeable number, because it can be changed into a prime (86507867) 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, 2535 + ... + 13395.

It is an arithmetic number, because the mean of its divisors is an integer number (4887900).

Almost surely, 2^86507865 is an apocalyptic number.

It is an amenable number.

86507865 is a deficient number, since it is larger than the sum of its proper divisors (69904935).

86507865 is a wasteful number, since it uses less digits than its factorization.

86507865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10934 (or 10928 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 86507865 is about 9300.9604342777. The cubic root of 86507865 is about 442.2676746540.

The spelling of 86507865 in words is "eighty-six million, five hundred seven thousand, eight hundred sixty-five".