12666727 has 2 divisors, whose sum is σ = 12666728. Its totient is φ = 12666726.

The previous prime is 12666701. The next prime is 12666763. The reversal of 12666727 is 72766621.

12666727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12666727 - 2¹⁹ = 12142439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12666427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333363 + 6333364.

It is an arithmetic number, because the mean of its divisors is an integer number (6333364).

Almost surely, 2^12666727 is an apocalyptic number.

12666727 is a deficient number, since it is larger than the sum of its proper divisors (1).

12666727 is an equidigital number, since it uses as much as digits as its factorization.

12666727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 12666727 is about 3559.0345601019. The cubic root of 12666727 is about 233.1067253462.

The spelling of 12666727 in words is "twelve million, six hundred sixty-six thousand, seven hundred twenty-seven".