856718875 has 16 divisors (see below), whose sum is σ = 1083843072. Its totient is φ = 675979200.

The previous prime is 856718861. The next prime is 856718923. The reversal of 856718875 is 578817658.

856718875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 856718875 - 2⁵ = 856718843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37819 + ... + 56068.

It is an arithmetic number, because the mean of its divisors is an integer number (67740192).

Almost surely, 2^856718875 is an apocalyptic number.

856718875 is a deficient number, since it is larger than the sum of its proper divisors (227124197).

856718875 is an equidigital number, since it uses as much as digits as its factorization.

856718875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93975 (or 93965 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 55.

The square root of 856718875 is about 29269.7604192450. The cubic root of 856718875 is about 949.7576020526.

The spelling of 856718875 in words is "eight hundred fifty-six million, seven hundred eighteen thousand, eight hundred seventy-five".