12986 has 8 divisors (see below), whose sum is σ = 20064. Its totient is φ = 6300.

The previous prime is 12983. The next prime is 13001. The reversal of 12986 is 68921.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 161.

It is an arithmetic number, because the mean of its divisors is an integer number (2508).

2¹²⁹⁸⁶ is an apocalyptic number.

12986 is a deficient number, since it is larger than the sum of its proper divisors (7078).

12986 is a wasteful number, since it uses less digits than its factorization.

12986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its digits is 864, while the sum is 26.

The square root of 12986 is about 113.9561319105. The cubic root of 12986 is about 23.5049031568.

The spelling of 12986 in words is "twelve thousand, nine hundred eighty-six".