109686 has 16 divisors (see below), whose sum is σ = 222768. Its totient is φ = 36000.

The previous prime is 109673. The next prime is 109717. The reversal of 109686 is 686901.

It is a congruent number.

It is an unprimeable number.

109686 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 in 7 ways as a sum of consecutive naturals, for example, 516 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (13923).

2¹⁰⁹⁶⁸⁶ is an apocalyptic number.

109686 is an abundant number, since it is smaller than the sum of its proper divisors (113082).

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

109686 is a wasteful number, since it uses less digits than its factorization.

109686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 109686 is about 331.1887679255. The cubic root of 109686 is about 47.8685640352.

The spelling of 109686 in words is "one hundred nine thousand, six hundred eighty-six".