12976643 has 2 divisors, whose sum is σ = 12976644. Its totient is φ = 12976642.

The previous prime is 12976567. The next prime is 12976657. The reversal of 12976643 is 34667921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12976643 - 2⁸ = 12976387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12976597 and 12976606.

It is not a weakly prime, because it can be changed into another prime (12975643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6488321 + 6488322.

It is an arithmetic number, because the mean of its divisors is an integer number (6488322).

Almost surely, 2^12976643 is an apocalyptic number.

12976643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12976643 is an equidigital number, since it uses as much as digits as its factorization.

12976643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 12976643 is about 3602.3107861482. The cubic root of 12976643 is about 234.9925635190.

The spelling of 12976643 in words is "twelve million, nine hundred seventy-six thousand, six hundred forty-three".