12166641 has 12 divisors (see below), whose sum is σ = 17605120. Its totient is φ = 8096760.

The previous prime is 12166607. The next prime is 12166667. The reversal of 12166641 is 14666121.

It is not a de Polignac number, because 12166641 - 2⁷ = 12166513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12166681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7536 + ... + 9006.

Almost surely, 2^12166641 is an apocalyptic number.

It is an amenable number.

12166641 is a deficient number, since it is larger than the sum of its proper divisors (5438479).

12166641 is a wasteful number, since it uses less digits than its factorization.

12166641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2393 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 12166641 is about 3488.0712435385. The cubic root of 12166641 is about 229.9977378479.

The spelling of 12166641 in words is "twelve million, one hundred sixty-six thousand, six hundred forty-one".