12815683 has 2 divisors, whose sum is σ = 12815684. Its totient is φ = 12815682.

The previous prime is 12815681. The next prime is 12815687. The reversal of 12815683 is 38651821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12815683 - 2¹ = 12815681 is a prime.

Together with 12815681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12815681) 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, 6407841 + 6407842.

It is an arithmetic number, because the mean of its divisors is an integer number (6407842).

Almost surely, 2^12815683 is an apocalyptic number.

12815683 is a deficient number, since it is larger than the sum of its proper divisors (1).

12815683 is an equidigital number, since it uses as much as digits as its factorization.

12815683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 12815683 is about 3579.8998589346. The cubic root of 12815683 is about 234.0169162534.

It can be divided in two parts, 1 and 2815683, that added together give a square (2815684 = 1678²).

The spelling of 12815683 in words is "twelve million, eight hundred fifteen thousand, six hundred eighty-three".