2686 has 8 divisors (see below), whose sum is σ = 4320. Its totient is φ = 1248.

The previous prime is 2683. The next prime is 2687. The reversal of 2686 is 6862.

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

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2683) 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, 6 + ... + 73.

It is an arithmetic number, because the mean of its divisors is an integer number (540).

2686 is a deficient number, since it is larger than the sum of its proper divisors (1634).

2686 is a wasteful number, since it uses less digits than its factorization.

2686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98.

The product of its digits is 576, while the sum is 22.

The square root of 2686 is about 51.8266340794. The cubic root of 2686 is about 13.9006572848.

The spelling of 2686 in words is "two thousand, six hundred eighty-six".