86918 has 8 divisors (see below), whose sum is σ = 140448. Its totient is φ = 40104.

The previous prime is 86869. The next prime is 86923. The reversal of 86918 is 81968.

It is a sphenic number, since it is the product of 3 distinct primes.

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 86918.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (17556).

2⁸⁶⁹¹⁸ is an apocalyptic number.

86918 is a deficient number, since it is larger than the sum of its proper divisors (53530).

86918 is a wasteful number, since it uses less digits than its factorization.

86918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358.

The product of its digits is 3456, while the sum is 32.

The square root of 86918 is about 294.8185882878. The cubic root of 86918 is about 44.2965505419.

Subtracting from 86918 its reverse (81968), we obtain a triangular number (4950 = T₉₉).

The spelling of 86918 in words is "eighty-six thousand, nine hundred eighteen".