856036851 has 16 divisors (see below), whose sum is σ = 1174091520. Its totient is φ = 554562720.

The previous prime is 856036829. The next prime is 856036871. The reversal of 856036851 is 158630658.

856036851 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 856036851 - 2⁹ = 856036339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856036801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12991 + ... + 43368.

It is an arithmetic number, because the mean of its divisors is an integer number (73380720).

Almost surely, 2^856036851 is an apocalyptic number.

856036851 is a deficient number, since it is larger than the sum of its proper divisors (318054669).

856036851 is a wasteful number, since it uses less digits than its factorization.

856036851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56506.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 856036851 is about 29258.1074405027. The cubic root of 856036851 is about 949.5055047916.

The spelling of 856036851 in words is "eight hundred fifty-six million, thirty-six thousand, eight hundred fifty-one".