12806 has 8 divisors (see below), whose sum is σ = 20280. Its totient is φ = 6048.

The previous prime is 12799. The next prime is 12809. The reversal of 12806 is 60821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12809) by changing a digit.

12806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 206.

It is an arithmetic number, because the mean of its divisors is an integer number (2535).

2¹²⁸⁰⁶ is an apocalyptic number.

12806 is a deficient number, since it is larger than the sum of its proper divisors (7474).

12806 is a wasteful number, since it uses less digits than its factorization.

12806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12806 is about 113.1635983875. The cubic root of 12806 is about 23.3957963569.

It can be divided in two parts, 12 and 806, that added together give a palindrome (818).

The spelling of 12806 in words is "twelve thousand, eight hundred six".