12621307 has 2 divisors, whose sum is σ = 12621308. Its totient is φ = 12621306.

The previous prime is 12621299. The next prime is 12621337. The reversal of 12621307 is 70312621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12621307 - 2³ = 12621299 is a prime.

It is not a weakly prime, because it can be changed into another prime (12621337) 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 as a sum of consecutive naturals, namely, 6310653 + 6310654.

It is an arithmetic number, because the mean of its divisors is an integer number (6310654).

Almost surely, 2^12621307 is an apocalyptic number.

12621307 is a deficient number, since it is larger than the sum of its proper divisors (1).

12621307 is an equidigital number, since it uses as much as digits as its factorization.

12621307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 12621307 is about 3552.6478857326. The cubic root of 12621307 is about 232.8277691020.

Adding to 12621307 its reverse (70312621), we get a palindrome (82933928).

The spelling of 12621307 in words is "twelve million, six hundred twenty-one thousand, three hundred seven".