12630009 has 16 divisors (see below), whose sum is σ = 19716480. Its totient is φ = 7040640.

The previous prime is 12629983. The next prime is 12630011. The reversal of 12630009 is 90003621.

It is not a de Polignac number, because 12630009 - 2⁸ = 12629753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12630019) 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, 6474 + ... + 8195.

It is an arithmetic number, because the mean of its divisors is an integer number (1232280).

Almost surely, 2^12630009 is an apocalyptic number.

It is an amenable number.

12630009 is a deficient number, since it is larger than the sum of its proper divisors (7086471).

12630009 is a wasteful number, since it uses less digits than its factorization.

12630009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14720.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 12630009 is about 3553.8723950080. The cubic root of 12630009 is about 232.8812659860.

It can be divided in two parts, 126 and 30009, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 12630009 in words is "twelve million, six hundred thirty thousand, nine".