12516863 has 2 divisors, whose sum is σ = 12516864. Its totient is φ = 12516862.

The previous prime is 12516859. The next prime is 12516883. The reversal of 12516863 is 36861521.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36861521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12516863 - 2² = 12516859 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12516883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258431 + 6258432.

It is an arithmetic number, because the mean of its divisors is an integer number (6258432).

Almost surely, 2^12516863 is an apocalyptic number.

12516863 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516863 is an equidigital number, since it uses as much as digits as its factorization.

12516863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 12516863 is about 3537.9178905113. The cubic root of 12516863 is about 232.1837562698.

The spelling of 12516863 in words is "twelve million, five hundred sixteen thousand, eight hundred sixty-three".