865896 has 32 divisors (see below), whose sum is σ = 2191200. Its totient is φ = 285120.

The previous prime is 865889. The next prime is 865933. The reversal of 865896 is 698568.

865896 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 865896.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2451 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (68475).

2⁸⁶⁵⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

865896 is an abundant number, since it is smaller than the sum of its proper divisors (1325304).

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

865896 is a wasteful number, since it uses less digits than its factorization.

865896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 445 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 865896 is about 930.5353297968. The cubic root of 865896 is about 95.3136814867.

The spelling of 865896 in words is "eight hundred sixty-five thousand, eight hundred ninety-six".