12866013 has 8 divisors (see below), whose sum is σ = 19060800. Its totient is φ = 8577324.

The previous prime is 12866011. The next prime is 12866041. The reversal of 12866013 is 31066821.

12866013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12866013 - 2¹ = 12866011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 476519 = 12866013 / (1 + 2 + 8 + 6 + 6 + 0 + 1 + 3).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866011) 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, 238233 + ... + 238286.

It is an arithmetic number, because the mean of its divisors is an integer number (2382600).

Almost surely, 2^12866013 is an apocalyptic number.

It is an amenable number.

12866013 is a deficient number, since it is larger than the sum of its proper divisors (6194787).

12866013 is an equidigital number, since it uses as much as digits as its factorization.

12866013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476528 (or 476522 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12866013 is about 3586.9224970718. The cubic root of 12866013 is about 234.3228613622.

The spelling of 12866013 in words is "twelve million, eight hundred sixty-six thousand, thirteen".