12663418 has 16 divisors (see below), whose sum is σ = 19393344. Its totient is φ = 6200320.

The previous prime is 12663403. The next prime is 12663433. The reversal of 12663418 is 81436621.

It is a happy number.

12663418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12663403) and next prime (12663433).

It is a self number, because there is not a number n which added to its sum of digits gives 12663418.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36321 + ... + 36667.

It is an arithmetic number, because the mean of its divisors is an integer number (1212084).

Almost surely, 2^12663418 is an apocalyptic number.

12663418 is a deficient number, since it is larger than the sum of its proper divisors (6729926).

12663418 is a wasteful number, since it uses less digits than its factorization.

12663418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its digits is 6912, while the sum is 31.

The square root of 12663418 is about 3558.5696564772. The cubic root of 12663418 is about 233.0864249868.

The spelling of 12663418 in words is "twelve million, six hundred sixty-three thousand, four hundred eighteen".