87857 has 12 divisors (see below), whose sum is σ = 112176. Its totient is φ = 68040.

The previous prime is 87853. The next prime is 87869. The reversal of 87857 is 75878.

It is not a de Polignac number, because 87857 - 2² = 87853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458 + ... + 620.

It is an arithmetic number, because the mean of its divisors is an integer number (9348).

2⁸⁷⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

87857 is a deficient number, since it is larger than the sum of its proper divisors (24319).

87857 is a wasteful number, since it uses less digits than its factorization.

87857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 181 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 87857 is about 296.4068150364. The cubic root of 87857 is about 44.4554956315.

The spelling of 87857 in words is "eighty-seven thousand, eight hundred fifty-seven".