12692621 has 2 divisors, whose sum is σ = 12692622. Its totient is φ = 12692620.

The previous prime is 12692597. The next prime is 12692623. The reversal of 12692621 is 12629621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 168100 = 3539^2 + 410^2 .

It is an emirp because it is prime and its reverse (12629621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12692621 is a prime.

It is a super-2 number, since 2×12692621² = 322205255699282, which contains 22 as substring.

Together with 12692623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12692623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6346310 + 6346311.

It is an arithmetic number, because the mean of its divisors is an integer number (6346311).

Almost surely, 2^12692621 is an apocalyptic number.

It is an amenable number.

12692621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12692621 is an equidigital number, since it uses as much as digits as its factorization.

12692621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 12692621 is about 3562.6704871487. The cubic root of 12692621 is about 233.2654603041.

The spelling of 12692621 in words is "twelve million, six hundred ninety-two thousand, six hundred twenty-one".