856634933 has 8 divisors (see below), whose sum is σ = 1068012480. Its totient is φ = 667507680.

The previous prime is 856634923. The next prime is 856634953. The reversal of 856634933 is 339436658.

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

It is not a de Polignac number, because 856634933 - 2⁴ = 856634917 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 (856634903) 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, 5562488 + ... + 5562641.

It is an arithmetic number, because the mean of its divisors is an integer number (133501560).

Almost surely, 2^856634933 is an apocalyptic number.

It is an amenable number.

856634933 is a deficient number, since it is larger than the sum of its proper divisors (211377547).

856634933 is a wasteful number, since it uses less digits than its factorization.

856634933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11125147.

The product of its digits is 1399680, while the sum is 47.

The square root of 856634933 is about 29268.3264468606. The cubic root of 856634933 is about 949.7265817032.

The spelling of 856634933 in words is "eight hundred fifty-six million, six hundred thirty-four thousand, nine hundred thirty-three".