12667648 has 36 divisors (see below), whose sum is σ = 28902160. Its totient is φ = 5428224.

The previous prime is 12667643. The next prime is 12667649. The reversal of 12667648 is 84676621.

It is a self number, because there is not a number n which added to its sum of digits gives 12667648.

It is not an unprimeable number, because it can be changed into a prime (12667643) 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 in 3 ways as a sum of consecutive naturals, for example, 1743 + ... + 5326.

Almost surely, 2^12667648 is an apocalyptic number.

It is an amenable number.

12667648 is an abundant number, since it is smaller than the sum of its proper divisors (16234512).

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

12667648 is an frugal number, since it uses more digits than its factorization.

12667648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7092 (or 7078 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 12667648 is about 3559.1639467718. The cubic root of 12667648 is about 233.1123749533.

The spelling of 12667648 in words is "twelve million, six hundred sixty-seven thousand, six hundred forty-eight".