12168643 has 2 divisors, whose sum is σ = 12168644. Its totient is φ = 12168642.

The previous prime is 12168577. The next prime is 12168697. The reversal of 12168643 is 34686121.

It is a happy number.

12168643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (34686121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12168643 is a prime.

It is a super-2 number, since 2×12168643² = 296151744922898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12168043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6084321 + 6084322.

It is an arithmetic number, because the mean of its divisors is an integer number (6084322).

Almost surely, 2^12168643 is an apocalyptic number.

12168643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12168643 is an equidigital number, since it uses as much as digits as its factorization.

12168643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 12168643 is about 3488.3582098173. The cubic root of 12168643 is about 230.0103524011.

The spelling of 12168643 in words is "twelve million, one hundred sixty-eight thousand, six hundred forty-three".