12626621 has 16 divisors (see below), whose sum is σ = 15321600. Its totient is φ = 10164528.

The previous prime is 12626617. The next prime is 12626623. The reversal of 12626621 is 12662621.

12626621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12626621 - 2² = 12626617 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12626623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18146 + ... + 18828.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^12626621 is an apocalyptic number.

It is an amenable number.

12626621 is a deficient number, since it is larger than the sum of its proper divisors (2694979).

12626621 is a wasteful number, since it uses less digits than its factorization.

12626621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 1728, while the sum is 26.

The square root of 12626621 is about 3553.3956998905. The cubic root of 12626621 is about 232.8604406567.

The spelling of 12626621 in words is "twelve million, six hundred twenty-six thousand, six hundred twenty-one".