865422 has 12 divisors (see below), whose sum is σ = 1875120. Its totient is φ = 288468.

The previous prime is 865409. The next prime is 865457. The reversal of 865422 is 224568.

865422 is a `hidden beast` number, since 8 + 654 + 2 + 2 = 666.

865422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

865422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24022 + ... + 24057.

It is an arithmetic number, because the mean of its divisors is an integer number (156260).

2⁸⁶⁵⁴²² is an apocalyptic number.

865422 is an abundant number, since it is smaller than the sum of its proper divisors (1009698).

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

865422 is a wasteful number, since it uses less digits than its factorization.

865422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48087 (or 48084 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 865422 is about 930.2806028291. The cubic root of 865422 is about 95.2962864296.

The spelling of 865422 in words is "eight hundred sixty-five thousand, four hundred twenty-two".