87687 has 6 divisors (see below), whose sum is σ = 126672. Its totient is φ = 58452.

The previous prime is 87683. The next prime is 87691. The reversal of 87687 is 78678.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87683) and next prime (87691).

It is not a de Polignac number, because 87687 - 2² = 87683 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87687.

It is not an unprimeable number, because it can be changed into a prime (87683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4863 + ... + 4880.

It is an arithmetic number, because the mean of its divisors is an integer number (21112).

2⁸⁷⁶⁸⁷ is an apocalyptic number.

87687 is a deficient number, since it is larger than the sum of its proper divisors (38985).

87687 is a wasteful number, since it uses less digits than its factorization.

87687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9749 (or 9746 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 87687 is about 296.1199081453. The cubic root of 87687 is about 44.4268038788.

Subtracting from 87687 its reverse (78678), we obtain a palindrome (9009).

The spelling of 87687 in words is "eighty-seven thousand, six hundred eighty-seven".