86718 has 16 divisors (see below), whose sum is σ = 176400. Its totient is φ = 28416.

The previous prime is 86711. The next prime is 86719. The reversal of 86718 is 81768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (11025).

2⁸⁶⁷¹⁸ is an apocalyptic number.

86718 is an abundant number, since it is smaller than the sum of its proper divisors (89682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88200).

86718 is a wasteful number, since it uses less digits than its factorization.

86718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

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

The square root of 86718 is about 294.4792013029. The cubic root of 86718 is about 44.2625487089.

Subtracting from 86718 its reverse (81768), we obtain a triangular number (4950 = T₉₉).

The spelling of 86718 in words is "eighty-six thousand, seven hundred eighteen".