12686533 has 8 divisors (see below), whose sum is σ = 13233920. Its totient is φ = 12147840.

The previous prime is 12686521. The next prime is 12686549. The reversal of 12686533 is 33568621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12686533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (1654240).

Almost surely, 2^12686533 is an apocalyptic number.

It is an amenable number.

12686533 is a deficient number, since it is larger than the sum of its proper divisors (547387).

12686533 is an equidigital number, since it uses as much as digits as its factorization.

12686533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347.

The product of its digits is 25920, while the sum is 34.

The square root of 12686533 is about 3561.8159694178. The cubic root of 12686533 is about 233.2281591762.

The spelling of 12686533 in words is "twelve million, six hundred eighty-six thousand, five hundred thirty-three".