856622 has 16 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 386400.

The previous prime is 856571. The next prime is 856627. The reversal of 856622 is 226658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856627) 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, 872 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2⁸⁵⁶⁶²² is an apocalyptic number.

856622 is a deficient number, since it is larger than the sum of its proper divisors (558610).

856622 is a wasteful number, since it uses less digits than its factorization.

856622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its digits is 5760, while the sum is 29.

The square root of 856622 is about 925.5387620192. The cubic root of 856622 is about 94.9721802197.

The spelling of 856622 in words is "eight hundred fifty-six thousand, six hundred twenty-two".