86865312 has 24 divisors (see below), whose sum is σ = 228021696. Its totient is φ = 28955072.

The previous prime is 86865293. The next prime is 86865349. The reversal of 86865312 is 21356868.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 452328 + ... + 452519.

It is an arithmetic number, because the mean of its divisors is an integer number (9500904).

Almost surely, 2^86865312 is an apocalyptic number.

It is an amenable number.

86865312 is an abundant number, since it is smaller than the sum of its proper divisors (141156384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86865312 is a wasteful number, since it uses less digits than its factorization.

86865312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904860 (or 904852 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 86865312 is about 9320.1562218667. The cubic root of 86865312 is about 442.8759816375.

The spelling of 86865312 in words is "eighty-six million, eight hundred sixty-five thousand, three hundred twelve".