856004 has 12 divisors (see below), whose sum is σ = 1507884. Its totient is φ = 425184.

The previous prime is 855997. The next prime is 856021. The reversal of 856004 is 400658.

856004 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 2 ways, for example, as 719104 + 136900 = 848^2 + 370^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 856004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (125657).

2⁸⁵⁶⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

856004 is a deficient number, since it is larger than the sum of its proper divisors (651880).

856004 is a wasteful number, since it uses less digits than its factorization.

856004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 856004 is about 925.2048421836. The cubic root of 856004 is about 94.9493358662.

The spelling of 856004 in words is "eight hundred fifty-six thousand, four".