856922 has 12 divisors (see below), whose sum is σ = 1413258. Its totient is φ = 389400.

The previous prime is 856909. The next prime is 856927. The reversal of 856922 is 229658.

856922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 755161 + 101761 = 869^2 + 319^2 .

It is a d-powerful number, because it can be written as 8⁶ + 5⁶ + 9⁶ + 6⁶ + 2⁵ + 2¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (856927) by changing a digit.

856922 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, 1529 + ... + 2012.

2⁸⁵⁶⁹²² is an apocalyptic number.

856922 is a deficient number, since it is larger than the sum of its proper divisors (556336).

856922 is a wasteful number, since it uses less digits than its factorization.

856922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565 (or 3554 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 856922 is about 925.7008155986. The cubic root of 856922 is about 94.9832657505.

Subtracting from 856922 its reverse (229658), we obtain a square (627264 = 792²).

It can be divided in two parts, 85 and 6922, that added together give a palindrome (7007).

The spelling of 856922 in words is "eight hundred fifty-six thousand, nine hundred twenty-two".