12621629 has 4 divisors (see below), whose sum is σ = 12634176. Its totient is φ = 12609084.

The previous prime is 12621611. The next prime is 12621647. The reversal of 12621629 is 92612621.

It is a happy number.

12621629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12621611) and next prime (12621647).

It is a cyclic number.

It is not a de Polignac number, because 12621629 - 2⁸ = 12621373 is a prime.

It is a super-2 number, since 2×12621629² = 318611037227282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4619 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (3158544).

Almost surely, 2^12621629 is an apocalyptic number.

It is an amenable number.

12621629 is a deficient number, since it is larger than the sum of its proper divisors (12547).

12621629 is a wasteful number, since it uses less digits than its factorization.

12621629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12546.

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

The square root of 12621629 is about 3552.6932037540. The cubic root of 12621629 is about 232.8297490846.

The spelling of 12621629 in words is "twelve million, six hundred twenty-one thousand, six hundred twenty-nine".