12665168 has 10 divisors (see below), whose sum is σ = 24538794. Its totient is φ = 6332576.

The previous prime is 12665167. The next prime is 12665173. The reversal of 12665168 is 86156621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10837264 + 1827904 = 3292^2 + 1352^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395771 + ... + 395802.

Almost surely, 2^12665168 is an apocalyptic number.

It is an amenable number.

12665168 is a deficient number, since it is larger than the sum of its proper divisors (11873626).

12665168 is an equidigital number, since it uses as much as digits as its factorization.

12665168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791581 (or 791575 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 12665168 is about 3558.8155332919. The cubic root of 12665168 is about 233.0971614893.

The spelling of 12665168 in words is "twelve million, six hundred sixty-five thousand, one hundred sixty-eight".