87868 has 12 divisors (see below), whose sum is σ = 167832. Its totient is φ = 39920.

The previous prime is 87853. The next prime is 87869. The reversal of 87868 is 86878.

87868 is nontrivially palindromic in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87869) 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, 955 + ... + 1042.

It is an arithmetic number, because the mean of its divisors is an integer number (13986).

2⁸⁷⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

87868 is a deficient number, since it is larger than the sum of its proper divisors (79964).

87868 is a wasteful number, since it uses less digits than its factorization.

87868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2010 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 87868 is about 296.4253700343. The cubic root of 87868 is about 44.4573508813.

Subtracting from 87868 its reverse (86878), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 878 and 68, that added together give a triangular number (946 = T₄₃).

The spelling of 87868 in words is "eighty-seven thousand, eight hundred sixty-eight".