12691166 has 8 divisors (see below), whose sum is σ = 19052760. Its totient is φ = 6340248.

The previous prime is 12691109. The next prime is 12691169. The reversal of 12691166 is 66119621.

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

It is a super-2 number, since 2×12691166² = 322131388879112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (2381595).

Almost surely, 2^12691166 is an apocalyptic number.

12691166 is a deficient number, since it is larger than the sum of its proper divisors (6361594).

12691166 is a wasteful number, since it uses less digits than its factorization.

12691166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338.

The product of its digits is 3888, while the sum is 32.

The square root of 12691166 is about 3562.4662805422. The cubic root of 12691166 is about 233.2565466154.

The spelling of 12691166 in words is "twelve million, six hundred ninety-one thousand, one hundred sixty-six".