12156668 has 12 divisors (see below), whose sum is σ = 21301560. Its totient is φ = 6070512.

The previous prime is 12156643. The next prime is 12156671. The reversal of 12156668 is 86665121.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2855 + ... + 5697.

It is an arithmetic number, because the mean of its divisors is an integer number (1775130).

Almost surely, 2^12156668 is an apocalyptic number.

It is an amenable number.

12156668 is a deficient number, since it is larger than the sum of its proper divisors (9144892).

12156668 is a wasteful number, since it uses less digits than its factorization.

12156668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916 (or 3914 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 12156668 is about 3486.6413638343. The cubic root of 12156668 is about 229.9348775932.

The spelling of 12156668 in words is "twelve million, one hundred fifty-six thousand, six hundred sixty-eight".