12630509 has 2 divisors, whose sum is σ = 12630510. Its totient is φ = 12630508.

The previous prime is 12630487. The next prime is 12630511. The reversal of 12630509 is 90503621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7409284 + 5221225 = 2722^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 12630509 - 2⁸ = 12630253 is a prime.

Together with 12630511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12630529) 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, 6315254 + 6315255.

It is an arithmetic number, because the mean of its divisors is an integer number (6315255).

Almost surely, 2^12630509 is an apocalyptic number.

It is an amenable number.

12630509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12630509 is an equidigital number, since it uses as much as digits as its factorization.

12630509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 12630509 is about 3553.9427401127. The cubic root of 12630509 is about 232.8843390663.

The spelling of 12630509 in words is "twelve million, six hundred thirty thousand, five hundred nine".