857086 has 8 divisors (see below), whose sum is σ = 1298664. Its totient is φ = 424200.

The previous prime is 857083. The next prime is 857099. The reversal of 857086 is 680758.

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

It is a super-2 number, since 2×857086² = 1469192822792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920 + ... + 2323.

It is an arithmetic number, because the mean of its divisors is an integer number (162333).

2⁸⁵⁷⁰⁸⁶ is an apocalyptic number.

857086 is a deficient number, since it is larger than the sum of its proper divisors (441578).

857086 is a wasteful number, since it uses less digits than its factorization.

857086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 857086 is about 925.7893928967. The cubic root of 857086 is about 94.9893247469.

The spelling of 857086 in words is "eight hundred fifty-seven thousand, eighty-six".