855996 has 12 divisors (see below), whose sum is σ = 1997352. Its totient is φ = 285328.

The previous prime is 855989. The next prime is 855997. The reversal of 855996 is 699558.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855997) 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, 35655 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (166446).

2⁸⁵⁵⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

855996 is an abundant number, since it is smaller than the sum of its proper divisors (1141356).

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

855996 is a wasteful number, since it uses less digits than its factorization.

855996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71340 (or 71338 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 855996 is about 925.2005188066. The cubic root of 855996 is about 94.9490400743.

The spelling of 855996 in words is "eight hundred fifty-five thousand, nine hundred ninety-six".