12966655 has 8 divisors (see below), whose sum is σ = 16756992. Its totient is φ = 9575328.

The previous prime is 12966643. The next prime is 12966661. The reversal of 12966655 is 55666921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12966655 - 2²¹ = 10869503 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 99679 + ... + 99808.

It is an arithmetic number, because the mean of its divisors is an integer number (2094624).

Almost surely, 2^12966655 is an apocalyptic number.

12966655 is a deficient number, since it is larger than the sum of its proper divisors (3790337).

12966655 is a wasteful number, since it uses less digits than its factorization.

12966655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199505.

The product of its digits is 97200, while the sum is 40.

The square root of 12966655 is about 3600.9241869276. The cubic root of 12966655 is about 234.9322575225.

The spelling of 12966655 in words is "twelve million, nine hundred sixty-six thousand, six hundred fifty-five".