12666376 has 48 divisors (see below), whose sum is σ = 25780860. Its totient is φ = 5829120.

The previous prime is 12666371. The next prime is 12666389. The reversal of 12666376 is 67366621.

It can be written as a sum of positive squares in 2 ways, for example, as 11902500 + 763876 = 3450^2 + 874^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173476 + ... + 173548.

Almost surely, 2^12666376 is an apocalyptic number.

It is an amenable number.

12666376 is an abundant number, since it is smaller than the sum of its proper divisors (13114484).

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

12666376 is a wasteful number, since it uses less digits than its factorization.

12666376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 139 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 12666376 is about 3558.9852486348. The cubic root of 12666376 is about 233.1045721666.

The spelling of 12666376 in words is "twelve million, six hundred sixty-six thousand, three hundred seventy-six".