857316613 has 16 divisors (see below), whose sum is σ = 975870720. Its totient is φ = 748141056.

The previous prime is 857316557. The next prime is 857316623. The reversal of 857316613 is 316613758.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857316613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857316623) 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, 13056 + ... + 43417.

It is an arithmetic number, because the mean of its divisors is an integer number (60991920).

Almost surely, 2^857316613 is an apocalyptic number.

It is an amenable number.

857316613 is a deficient number, since it is larger than the sum of its proper divisors (118554107).

857316613 is a wasteful number, since it uses less digits than its factorization.

857316613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56556.

The product of its digits is 90720, while the sum is 40.

The square root of 857316613 is about 29279.9694842737. The cubic root of 857316613 is about 949.9784345982.

The spelling of 857316613 in words is "eight hundred fifty-seven million, three hundred sixteen thousand, six hundred thirteen".