858956 has 12 divisors (see below), whose sum is σ = 1717968. Its totient is φ = 368112.

The previous prime is 858953. The next prime is 858961. The reversal of 858956 is 659858.

858956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

858956 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (858953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15311 + ... + 15366.

It is an arithmetic number, because the mean of its divisors is an integer number (143164).

2⁸⁵⁸⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

858956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

858956 is a wasteful number, since it uses less digits than its factorization.

858956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30688 (or 30686 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 858956 is about 926.7987915400. The cubic root of 858956 is about 95.0583574961.

The spelling of 858956 in words is "eight hundred fifty-eight thousand, nine hundred fifty-six".