12666608 has 10 divisors (see below), whose sum is σ = 24541584. Its totient is φ = 6333296.

The previous prime is 12666607. The next prime is 12666671. The reversal of 12666608 is 80666621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395816 + ... + 395847.

Almost surely, 2^12666608 is an apocalyptic number.

It is an amenable number.

12666608 is a deficient number, since it is larger than the sum of its proper divisors (11874976).

12666608 is an equidigital number, since it uses as much as digits as its factorization.

12666608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791671 (or 791665 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 12666608 is about 3559.0178420458. The cubic root of 12666608 is about 233.1059953553.

The spelling of 12666608 in words is "twelve million, six hundred sixty-six thousand, six hundred eight".