12689166 has 16 divisors (see below), whose sum is σ = 29003904. Its totient is φ = 3625464.

The previous prime is 12689147. The next prime is 12689167. The reversal of 12689166 is 66198621.

12689166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12689166² = 322029867551112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151020 + ... + 151103.

It is an arithmetic number, because the mean of its divisors is an integer number (1812744).

Almost surely, 2^12689166 is an apocalyptic number.

12689166 is an abundant number, since it is smaller than the sum of its proper divisors (16314738).

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

12689166 is a wasteful number, since it uses less digits than its factorization.

12689166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302135.

The product of its digits is 31104, while the sum is 39.

The square root of 12689166 is about 3562.1855650710. The cubic root of 12689166 is about 233.2442930105.

The spelling of 12689166 in words is "twelve million, six hundred eighty-nine thousand, one hundred sixty-six".