12694813 has 2 divisors, whose sum is σ = 12694814. Its totient is φ = 12694812.

The previous prime is 12694783. The next prime is 12694823. The reversal of 12694813 is 31849621.

12694813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12089529 + 605284 = 3477^2 + 778^2 .

It is an emirp because it is prime and its reverse (31849621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12694813 is a prime.

It is a super-2 number, since 2×12694813² = 322316554209938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12694823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347406 + 6347407.

It is an arithmetic number, because the mean of its divisors is an integer number (6347407).

Almost surely, 2^12694813 is an apocalyptic number.

It is an amenable number.

12694813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12694813 is an equidigital number, since it uses as much as digits as its factorization.

12694813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 12694813 is about 3562.9781082684. The cubic root of 12694813 is about 233.2788877503.

The spelling of 12694813 in words is "twelve million, six hundred ninety-four thousand, eight hundred thirteen".