12666763 has 2 divisors, whose sum is σ = 12666764. Its totient is φ = 12666762.

The previous prime is 12666727. The next prime is 12666779. The reversal of 12666763 is 36766621.

It is a strong prime.

It is an emirp because it is prime and its reverse (36766621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12666763 is a prime.

It is not a weakly prime, because it can be changed into another prime (12666263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333381 + 6333382.

It is an arithmetic number, because the mean of its divisors is an integer number (6333382).

Almost surely, 2^12666763 is an apocalyptic number.

12666763 is a deficient number, since it is larger than the sum of its proper divisors (1).

12666763 is an equidigital number, since it uses as much as digits as its factorization.

12666763 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12666763 is about 3559.0396176497. The cubic root of 12666763 is about 233.1069461829.

The spelling of 12666763 in words is "twelve million, six hundred sixty-six thousand, seven hundred sixty-three".