856166379 has 8 divisors (see below), whose sum is σ = 1141761600. Its totient is φ = 570674376.

The previous prime is 856166357. The next prime is 856166407. The reversal of 856166379 is 973661658.

856166379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 856166379 - 2⁷ = 856166251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856166279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3757 + ... + 41550.

It is an arithmetic number, because the mean of its divisors is an integer number (142720200).

Almost surely, 2^856166379 is an apocalyptic number.

856166379 is a deficient number, since it is larger than the sum of its proper divisors (285595221).

856166379 is a wasteful number, since it uses less digits than its factorization.

856166379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51609.

The product of its digits is 1632960, while the sum is 51.

The square root of 856166379 is about 29260.3208970784. The cubic root of 856166379 is about 949.5533926624.

The spelling of 856166379 in words is "eight hundred fifty-six million, one hundred sixty-six thousand, three hundred seventy-nine".