12656629 has 2 divisors, whose sum is σ = 12656630. Its totient is φ = 12656628.

The previous prime is 12656593. The next prime is 12656639. The reversal of 12656629 is 92665621.

12656629 is digitally balanced in base 3, 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., 10400625 + 2256004 = 3225^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 12656629 - 2²¹ = 10559477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12656639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328314 + 6328315.

It is an arithmetic number, because the mean of its divisors is an integer number (6328315).

Almost surely, 2^12656629 is an apocalyptic number.

It is an amenable number.

12656629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12656629 is an equidigital number, since it uses as much as digits as its factorization.

12656629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 12656629 is about 3557.6156341010. The cubic root of 12656629 is about 233.0447641280.

The spelling of 12656629 in words is "twelve million, six hundred fifty-six thousand, six hundred twenty-nine".