857699161 has 8 divisors (see below), whose sum is σ = 936352800. Its totient is φ = 779159040.

The previous prime is 857699153. The next prime is 857699173. The reversal of 857699161 is 161996758.

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

It is not a de Polignac number, because 857699161 - 2³ = 857699153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 857699099 and 857699108.

It is not an unprimeable number, because it can be changed into a prime (857699261) 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, 12171 + ... + 43168.

It is an arithmetic number, because the mean of its divisors is an integer number (117044100).

Almost surely, 2^857699161 is an apocalyptic number.

It is an amenable number.

857699161 is a deficient number, since it is larger than the sum of its proper divisors (78653639).

857699161 is a wasteful number, since it uses less digits than its factorization.

857699161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56759.

The product of its digits is 816480, while the sum is 52.

The square root of 857699161 is about 29286.5013444761. The cubic root of 857699161 is about 950.1197119686.

The spelling of 857699161 in words is "eight hundred fifty-seven million, six hundred ninety-nine thousand, one hundred sixty-one".