865868 has 12 divisors (see below), whose sum is σ = 1595160. Its totient is φ = 410112.

The previous prime is 865867. The next prime is 865871. The reversal of 865868 is 868568.

865868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 865868.

It is not an unprimeable number, because it can be changed into a prime (865867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5621 + ... + 5772.

It is an arithmetic number, because the mean of its divisors is an integer number (132930).

2⁸⁶⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

865868 is a deficient number, since it is larger than the sum of its proper divisors (729292).

865868 is a wasteful number, since it uses less digits than its factorization.

865868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11416 (or 11414 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 865868 is about 930.5202845720. The cubic root of 865868 is about 95.3126541071.

The spelling of 865868 in words is "eight hundred sixty-five thousand, eight hundred sixty-eight".