853858656 has 72 divisors (see below), whose sum is σ = 2775047184. Its totient is φ = 243959040.

The previous prime is 853858573. The next prime is 853858703. The reversal of 853858656 is 656858358.

853858656 is a `hidden beast` number, since 8 + 5 + 3 + 8 + 586 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×853858656² = 1458149208852252672, 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 11 ways as a sum of consecutive naturals, for example, 209755 + ... + 213786.

It is an arithmetic number, because the mean of its divisors is an integer number (38542322).

Almost surely, 2^853858656 is an apocalyptic number.

It is an amenable number.

853858656 is an abundant number, since it is smaller than the sum of its proper divisors (1921188528).

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

853858656 is a wasteful number, since it uses less digits than its factorization.

853858656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423564 (or 423553 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The square root of 853858656 is about 29220.8599462781. The cubic root of 853858656 is about 948.6994784244.

The spelling of 853858656 in words is "eight hundred fifty-three million, eight hundred fifty-eight thousand, six hundred fifty-six".