12924621 has 6 divisors (see below), whose sum is σ = 18668910. Its totient is φ = 8616408.

The previous prime is 12924563. The next prime is 12924629. The reversal of 12924621 is 12642921.

12924621 is a `hidden beast` number, since 12 + 9 + 24 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 1022121 = 3450^2 + 1011^2 .

It is not a de Polignac number, because 12924621 - 2¹⁰ = 12923597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12924629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 718026 + ... + 718043.

It is an arithmetic number, because the mean of its divisors is an integer number (3111485).

Almost surely, 2^12924621 is an apocalyptic number.

It is an amenable number.

12924621 is a deficient number, since it is larger than the sum of its proper divisors (5744289).

12924621 is a wasteful number, since it uses less digits than its factorization.

12924621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436075 (or 1436072 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 12924621 is about 3595.0828919512. The cubic root of 12924621 is about 234.6781227817.

The spelling of 12924621 in words is "twelve million, nine hundred twenty-four thousand, six hundred twenty-one".