864315 has 12 divisors (see below), whose sum is σ = 1498224. Its totient is φ = 460944.

The previous prime is 864307. The next prime is 864319. The reversal of 864315 is 513468.

864315 is a `hidden beast` number, since 8 + 643 + 15 = 666.

864315 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 864315 - 2³ = 864307 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (864319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9559 + ... + 9648.

It is an arithmetic number, because the mean of its divisors is an integer number (124852).

2⁸⁶⁴³¹⁵ is an apocalyptic number.

864315 is a deficient number, since it is larger than the sum of its proper divisors (633909).

864315 is a wasteful number, since it uses less digits than its factorization.

864315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19218 (or 19215 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 864315 is about 929.6854306700. The cubic root of 864315 is about 95.2556365111.

It can be divided in two parts, 86431 and 5, that added together give a square (86436 = 294²).

The spelling of 864315 in words is "eight hundred sixty-four thousand, three hundred fifteen".