12666136 has 32 divisors (see below), whose sum is σ = 27879840. Its totient is φ = 5280768.

The previous prime is 12666133. The next prime is 12666167. The reversal of 12666136 is 63166621.

It is a junction number, because it is equal to n+sod(n) for n = 12666098 and 12666107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666131) 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, 985 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (871245).

Almost surely, 2^12666136 is an apocalyptic number.

It is an amenable number.

12666136 is an abundant number, since it is smaller than the sum of its proper divisors (15213704).

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

12666136 is a wasteful number, since it uses less digits than its factorization.

12666136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163 (or 6159 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 12666136 is about 3558.9515309990. The cubic root of 12666136 is about 233.1030998841.

The spelling of 12666136 in words is "twelve million, six hundred sixty-six thousand, one hundred thirty-six".