12686683 has 4 divisors (see below), whose sum is σ = 12829320. Its totient is φ = 12544048.

The previous prime is 12686647. The next prime is 12686747. The reversal of 12686683 is 38668621.

12686683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38668621 = 83 ⋅465887.

It is a cyclic number.

It is not a de Polignac number, because 12686683 - 2²¹ = 10589531 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12686483) 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, 71185 + ... + 71362.

It is an arithmetic number, because the mean of its divisors is an integer number (3207330).

Almost surely, 2^12686683 is an apocalyptic number.

12686683 is a deficient number, since it is larger than the sum of its proper divisors (142637).

12686683 is an equidigital number, since it uses as much as digits as its factorization.

12686683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142636.

The product of its digits is 82944, while the sum is 40.

The square root of 12686683 is about 3561.8370260302. The cubic root of 12686683 is about 233.2290783684.

The spelling of 12686683 in words is "twelve million, six hundred eighty-six thousand, six hundred eighty-three".