12663408 has 20 divisors (see below), whose sum is σ = 32713928. Its totient is φ = 4221120.

The previous prime is 12663403. The next prime is 12663433. The reversal of 12663408 is 80436621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131863 + ... + 131958.

Almost surely, 2^12663408 is an apocalyptic number.

It is an amenable number.

12663408 is an abundant number, since it is smaller than the sum of its proper divisors (20050520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12663408 is a wasteful number, since it uses less digits than its factorization.

12663408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263832 (or 263826 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 12663408 is about 3558.5682514180. The cubic root of 12663408 is about 233.0863636325.

The spelling of 12663408 in words is "twelve million, six hundred sixty-three thousand, four hundred eight".