856034623 has 4 divisors (see below), whose sum is σ = 856158160. Its totient is φ = 855911088.

The previous prime is 856034617. The next prime is 856034633. The reversal of 856034623 is 326430658.

856034623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 856034623 - 2²⁹ = 319163711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856034633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50715 + ... + 65452.

It is an arithmetic number, because the mean of its divisors is an integer number (214039540).

Almost surely, 2^856034623 is an apocalyptic number.

856034623 is a deficient number, since it is larger than the sum of its proper divisors (123537).

856034623 is a wasteful number, since it uses less digits than its factorization.

856034623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123536.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 856034623 is about 29258.0693655614. The cubic root of 856034623 is about 949.5046810342.

The spelling of 856034623 in words is "eight hundred fifty-six million, thirty-four thousand, six hundred twenty-three".