12665166 has 8 divisors (see below), whose sum is σ = 25330344. Its totient is φ = 4221720.

The previous prime is 12665131. The next prime is 12665167. The reversal of 12665166 is 66156621.

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

12665166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055425 + ... + 1055436.

It is an arithmetic number, because the mean of its divisors is an integer number (3166293).

Almost surely, 2^12665166 is an apocalyptic number.

12665166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12665166 is a wasteful number, since it uses less digits than its factorization.

12665166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110866.

The product of its digits is 12960, while the sum is 33.

The square root of 12665166 is about 3558.8152522996. The cubic root of 12665166 is about 233.0971492196.

The spelling of 12665166 in words is "twelve million, six hundred sixty-five thousand, one hundred sixty-six".