856666700 has 18 divisors (see below), whose sum is σ = 1858966956. Its totient is φ = 342666640.

The previous prime is 856666693. The next prime is 856666721. The reversal of 856666700 is 7666658.

856666700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4283234 + ... + 4283433.

It is an arithmetic number, because the mean of its divisors is an integer number (103275942).

Almost surely, 2^856666700 is an apocalyptic number.

It is an amenable number.

856666700 is an abundant number, since it is smaller than the sum of its proper divisors (1002300256).

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

856666700 is a wasteful number, since it uses less digits than its factorization.

856666700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566681 (or 8566674 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 856666700 is about 29268.8691274535. The cubic root of 856666700 is about 949.7383212787.

The spelling of 856666700 in words is "eight hundred fifty-six million, six hundred sixty-six thousand, seven hundred".