12978683 has 2 divisors, whose sum is σ = 12978684. Its totient is φ = 12978682.

The previous prime is 12978659. The next prime is 12978709. The reversal of 12978683 is 38687921.

It is a weak prime.

It is an emirp because it is prime and its reverse (38687921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12978683 - 2⁶ = 12978619 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12978613) 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 as a sum of consecutive naturals, namely, 6489341 + 6489342.

It is an arithmetic number, because the mean of its divisors is an integer number (6489342).

Almost surely, 2^12978683 is an apocalyptic number.

12978683 is a deficient number, since it is larger than the sum of its proper divisors (1).

12978683 is an equidigital number, since it uses as much as digits as its factorization.

12978683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 12978683 is about 3602.5939266034. The cubic root of 12978683 is about 235.0048769170.

The spelling of 12978683 in words is "twelve million, nine hundred seventy-eight thousand, six hundred eighty-three".