12655816 has 16 divisors (see below), whose sum is σ = 23961600. Its totient is φ = 6266064.

The previous prime is 12655807. The next prime is 12655829. The reversal of 12655816 is 61855621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6856 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (1497600).

Almost surely, 2^12655816 is an apocalyptic number.

It is an amenable number.

12655816 is a deficient number, since it is larger than the sum of its proper divisors (11305784).

12655816 is a wasteful number, since it uses less digits than its factorization.

12655816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468 (or 15464 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 12655816 is about 3557.5013703441. The cubic root of 12655816 is about 233.0397741355.

The spelling of 12655816 in words is "twelve million, six hundred fifty-five thousand, eight hundred sixteen".