108986 has 4 divisors (see below), whose sum is σ = 163482. Its totient is φ = 54492.

The previous prime is 108971. The next prime is 108991. The reversal of 108986 is 689801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689801 = 7 ⋅98543.

It can be written as a sum of positive squares in only one way, i.e., 101761 + 7225 = 319^2 + 85^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

108986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27245 + ... + 27248.

2¹⁰⁸⁹⁸⁶ is an apocalyptic number.

108986 is a deficient number, since it is larger than the sum of its proper divisors (54496).

108986 is an equidigital number, since it uses as much as digits as its factorization.

108986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54495.

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

The square root of 108986 is about 330.1302773149. The cubic root of 108986 is about 47.7665165856.

The spelling of 108986 in words is "one hundred eight thousand, nine hundred eighty-six".