856336173 has 32 divisors (see below), whose sum is σ = 1433963520. Its totient is φ = 441586560.

The previous prime is 856336163. The next prime is 856336181. The reversal of 856336173 is 371633658.

856336173 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 856336173 - 2¹⁸ = 856074029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856336133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18118 + ... + 45176.

It is an arithmetic number, because the mean of its divisors is an integer number (44811360).

Almost surely, 2^856336173 is an apocalyptic number.

It is an amenable number.

856336173 is a deficient number, since it is larger than the sum of its proper divisors (577627347).

856336173 is a wasteful number, since it uses less digits than its factorization.

856336173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27217.

The product of its digits is 272160, while the sum is 42.

The square root of 856336173 is about 29263.2221910028. Note that the first 3 decimals coincide. The cubic root of 856336173 is about 949.6161599841.

It can be divided in two parts, 85633 and 6173, that added together give a triangular number (91806 = T₄₂₈).

The spelling of 856336173 in words is "eight hundred fifty-six million, three hundred thirty-six thousand, one hundred seventy-three".