808857 has 24 divisors (see below), whose sum is σ = 1375296. Its totient is φ = 448416.

The previous prime is 808853. The next prime is 808867. The reversal of 808857 is 758808.

It is not a de Polignac number, because 808857 - 2² = 808853 is a prime.

It is a super-3 number, since 3×808857³ = 1587583218833396379, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (808853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2158 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (57304).

2⁸⁰⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

808857 is a deficient number, since it is larger than the sum of its proper divisors (566439).

808857 is a wasteful number, since it uses less digits than its factorization.

808857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 808857 is about 899.3647758279. The cubic root of 808857 is about 93.1731080352.

The spelling of 808857 in words is "eight hundred eight thousand, eight hundred fifty-seven".