12661608 has 32 divisors (see below), whose sum is σ = 32392800. Its totient is φ = 4122048.

The previous prime is 12661591. The next prime is 12661613. The reversal of 12661608 is 80616621.

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, 5103 + ... + 7166.

It is an arithmetic number, because the mean of its divisors is an integer number (1012275).

Almost surely, 2^12661608 is an apocalyptic number.

It is an amenable number.

12661608 is an abundant number, since it is smaller than the sum of its proper divisors (19731192).

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

12661608 is a wasteful number, since it uses less digits than its factorization.

12661608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321 (or 12317 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12661608 is about 3558.3153317265. The cubic root of 12661608 is about 233.0753193351.

The spelling of 12661608 in words is "twelve million, six hundred sixty-one thousand, six hundred eight".