856314797 has 4 divisors (see below), whose sum is σ = 922185180. Its totient is φ = 790444416.

The previous prime is 856314787. The next prime is 856314827. The reversal of 856314797 is 797413658.

856314797 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 can be written as a sum of positive squares in 2 ways, for example, as 221980201 + 634334596 = 14899^2 + 25186^2 .

It is a cyclic number.

It is not a de Polignac number, because 856314797 - 2²⁴ = 839537581 is a prime.

It is a super-2 number, since 2×856314797² = 1466550063122302418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856314707) 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, 32935172 + ... + 32935197.

It is an arithmetic number, because the mean of its divisors is an integer number (230546295).

Almost surely, 2^856314797 is an apocalyptic number.

It is an amenable number.

856314797 is a deficient number, since it is larger than the sum of its proper divisors (65870383).

856314797 is a wasteful number, since it uses less digits than its factorization.

856314797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65870382.

The product of its digits is 1270080, while the sum is 50.

The square root of 856314797 is about 29262.8569521159. The cubic root of 856314797 is about 949.6082584284.

The spelling of 856314797 in words is "eight hundred fifty-six million, three hundred fourteen thousand, seven hundred ninety-seven".