856803804 has 24 divisors (see below), whose sum is σ = 2031984528. Its totient is φ = 280919040.

The previous prime is 856803799. The next prime is 856803821. The reversal of 856803804 is 408308658.

856803804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×856803804² = 1468225517097740832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584517 + ... + 585980.

It is an arithmetic number, because the mean of its divisors is an integer number (84666022).

Almost surely, 2^856803804 is an apocalyptic number.

It is an amenable number.

856803804 is an abundant number, since it is smaller than the sum of its proper divisors (1175180724).

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

856803804 is a wasteful number, since it uses less digits than its factorization.

856803804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170565 (or 1170563 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 856803804 is about 29271.2111809539. The cubic root of 856803804 is about 949.7889850809.

The spelling of 856803804 in words is "eight hundred fifty-six million, eight hundred three thousand, eight hundred four".