12630917 has 8 divisors (see below), whose sum is σ = 13630680. Its totient is φ = 11635200.

The previous prime is 12630913. The next prime is 12630941. The reversal of 12630917 is 71903621.

It is a Cunningham number, because it is equal to 3554²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 21316 + 12609601 = 146^2 + 3551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12630917 - 2² = 12630913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12630917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12630913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9917 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1703835).

Almost surely, 2^12630917 is an apocalyptic number.

It is an amenable number.

12630917 is a deficient number, since it is larger than the sum of its proper divisors (999763).

12630917 is a wasteful number, since it uses less digits than its factorization.

12630917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12630917 is about 3554.0001406865. Note that the first 3 decimals coincide. The cubic root of 12630917 is about 232.8868466397.

The spelling of 12630917 in words is "twelve million, six hundred thirty thousand, nine hundred seventeen".