865122 has 16 divisors (see below), whose sum is σ = 1805760. Its totient is φ = 275792.

The previous prime is 865121. The next prime is 865153. The reversal of 865122 is 221568.

865122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 865092 and 865101.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 865122.

It is not an unprimeable number, because it can be changed into a prime (865121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997 + ... + 3272.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2⁸⁶⁵¹²² is an apocalyptic number.

865122 is an abundant number, since it is smaller than the sum of its proper divisors (940638).

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

865122 is a wasteful number, since it uses less digits than its factorization.

865122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297.

The product of its digits is 960, while the sum is 24.

The square root of 865122 is about 930.1193471808. The cubic root of 865122 is about 95.2852736173.

The spelling of 865122 in words is "eight hundred sixty-five thousand, one hundred twenty-two".