12166727 has 4 divisors (see below), whose sum is σ = 12262656. Its totient is φ = 12070800.

The previous prime is 12166703. The next prime is 12166729. The reversal of 12166727 is 72766121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72766121 = 659 ⋅110419.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12166727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12166693 and 12166702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166729) 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, 47774 + ... + 48027.

It is an arithmetic number, because the mean of its divisors is an integer number (3065664).

Almost surely, 2^12166727 is an apocalyptic number.

12166727 is a deficient number, since it is larger than the sum of its proper divisors (95929).

12166727 is an equidigital number, since it uses as much as digits as its factorization.

12166727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95928.

The product of its digits is 7056, while the sum is 32.

The square root of 12166727 is about 3488.0835712465. The cubic root of 12166727 is about 229.9982797603.

The spelling of 12166727 in words is "twelve million, one hundred sixty-six thousand, seven hundred twenty-seven".