12987713 has 2 divisors, whose sum is σ = 12987714. Its totient is φ = 12987712.

The previous prime is 12987707. The next prime is 12987761. The reversal of 12987713 is 31778921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8248384 + 4739329 = 2872^2 + 2177^2 .

It is a cyclic number.

It is not a de Polignac number, because 12987713 - 2¹⁰ = 12986689 is a prime.

It is equal to p₈₄₈₄₇₇ and since 12987713 and 848477 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12987413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6493856 + 6493857.

It is an arithmetic number, because the mean of its divisors is an integer number (6493857).

Almost surely, 2^12987713 is an apocalyptic number.

It is an amenable number.

12987713 is a deficient number, since it is larger than the sum of its proper divisors (1).

12987713 is an equidigital number, since it uses as much as digits as its factorization.

12987713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 38.

The square root of 12987713 is about 3603.8469723339. The cubic root of 12987713 is about 235.0593663203.

The spelling of 12987713 in words is "twelve million, nine hundred eighty-seven thousand, seven hundred thirteen".