12630913 has 2 divisors, whose sum is σ = 12630914. Its totient is φ = 12630912.

The previous prime is 12630869. The next prime is 12630941. The reversal of 12630913 is 31903621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 3732624 = 2983^2 + 1932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12630913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12630313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315456 + 6315457.

It is an arithmetic number, because the mean of its divisors is an integer number (6315457).

Almost surely, 2^12630913 is an apocalyptic number.

It is an amenable number.

12630913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12630913 is an equidigital number, since it uses as much as digits as its factorization.

12630913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 12630913 is about 3553.9995779403. Note that the first 3 decimals coincide. The cubic root of 12630913 is about 232.8868220559.

The spelling of 12630913 in words is "twelve million, six hundred thirty thousand, nine hundred thirteen".