86187 has 4 divisors (see below), whose sum is σ = 114920. Its totient is φ = 57456.

The previous prime is 86183. The next prime is 86197. The reversal of 86187 is 78168.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86187 - 2² = 86183 is a prime.

It is a D-number.

It is a Duffinian number.

86187 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (86183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14362 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (28730).

2⁸⁶¹⁸⁷ is an apocalyptic number.

86187 is a deficient number, since it is larger than the sum of its proper divisors (28733).

86187 is a wasteful number, since it uses less digits than its factorization.

86187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28732.

The product of its digits is 2688, while the sum is 30.

The square root of 86187 is about 293.5762251954. The cubic root of 86187 is about 44.1720194454.

The spelling of 86187 in words is "eighty-six thousand, one hundred eighty-seven".