865832 has 16 divisors (see below), whose sum is σ = 1771200. Its totient is φ = 393520.

The previous prime is 865829. The next prime is 865847. The reversal of 865832 is 238568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4832 + ... + 5007.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

2⁸⁶⁵⁸³² is an apocalyptic number.

It is an amenable number.

865832 is an abundant number, since it is smaller than the sum of its proper divisors (905368).

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

865832 is a wasteful number, since it uses less digits than its factorization.

865832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9856 (or 9852 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 865832 is about 930.5009403542. The cubic root of 865832 is about 95.3113331578.

Subtracting from 865832 its reverse (238568), we obtain a square (627264 = 792²).

It can be divided in two parts, 86583 and 2, that multiplied together give a triangular number (173166 = T₅₈₈).

The spelling of 865832 in words is "eight hundred sixty-five thousand, eight hundred thirty-two".