12663648 has 48 divisors (see below), whose sum is σ = 36938160. Its totient is φ = 4220928.

The previous prime is 12663619. The next prime is 12663653. The reversal of 12663648 is 84636621.

12663648 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 3 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 6465 + ... + 8192.

It is an arithmetic number, because the mean of its divisors is an integer number (769545).

Almost surely, 2^12663648 is an apocalyptic number.

12663648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12663648 is an abundant number, since it is smaller than the sum of its proper divisors (24274512).

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

12663648 is a wasteful number, since it uses less digits than its factorization.

12663648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676 (or 14662 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 12663648 is about 3558.6019726853. The cubic root of 12663648 is about 233.0878361265.

The spelling of 12663648 in words is "twelve million, six hundred sixty-three thousand, six hundred forty-eight".