108681 has 8 divisors (see below), whose sum is σ = 153504. Its totient is φ = 68160.

The previous prime is 108677. The next prime is 108707. The reversal of 108681 is 186801.

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

It is not a de Polignac number, because 108681 - 2² = 108677 is a prime.

It is a super-2 number, since 2×108681² = 23623119522, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 108681.

It is not an unprimeable number, because it can be changed into a prime (108631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (19188).

2¹⁰⁸⁶⁸¹ is an apocalyptic number.

108681 is the 209-th centered pentagonal number.

It is an amenable number.

108681 is a deficient number, since it is larger than the sum of its proper divisors (44823).

108681 is a wasteful number, since it uses less digits than its factorization.

108681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 108681 is about 329.6680148270. The cubic root of 108681 is about 47.7219163645.

The spelling of 108681 in words is "one hundred eight thousand, six hundred eighty-one".