12663172 has 12 divisors (see below), whose sum is σ = 22211280. Its totient is φ = 6317096.

The previous prime is 12663143. The next prime is 12663191. The reversal of 12663172 is 27136621.

It is a self number, because there is not a number n which added to its sum of digits gives 12663172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (1850940).

Almost surely, 2^12663172 is an apocalyptic number.

It is an amenable number.

12663172 is a deficient number, since it is larger than the sum of its proper divisors (9548108).

12663172 is a wasteful number, since it uses less digits than its factorization.

12663172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250 (or 7248 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 12663172 is about 3558.5350918601. The cubic root of 12663172 is about 233.0849156620.

Adding to 12663172 its reverse (27136621), we get a palindrome (39799793).

The spelling of 12663172 in words is "twelve million, six hundred sixty-three thousand, one hundred seventy-two".