12786863 has 2 divisors, whose sum is σ = 12786864. Its totient is φ = 12786862.

The previous prime is 12786847. The next prime is 12786871. The reversal of 12786863 is 36868721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12786863 - 2⁴ = 12786847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12786863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12783863) 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, 6393431 + 6393432.

It is an arithmetic number, because the mean of its divisors is an integer number (6393432).

Almost surely, 2^12786863 is an apocalyptic number.

12786863 is a deficient number, since it is larger than the sum of its proper divisors (1).

12786863 is an equidigital number, since it uses as much as digits as its factorization.

12786863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 12786863 is about 3575.8723411218. The cubic root of 12786863 is about 233.8413649530.

The spelling of 12786863 in words is "twelve million, seven hundred eighty-six thousand, eight hundred sixty-three".