12863569 has 2 divisors, whose sum is σ = 12863570. Its totient is φ = 12863568.

The previous prime is 12863561. The next prime is 12863573. The reversal of 12863569 is 96536821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 82944 = 3575^2 + 288^2 .

It is a cyclic number.

It is not a de Polignac number, because 12863569 - 2³ = 12863561 is a prime.

It is a super-2 number, since 2×12863569² = 330942814835522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12863561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431784 + 6431785.

It is an arithmetic number, because the mean of its divisors is an integer number (6431785).

Almost surely, 2^12863569 is an apocalyptic number.

It is an amenable number.

12863569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12863569 is an equidigital number, since it uses as much as digits as its factorization.

12863569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 12863569 is about 3586.5817988720. The cubic root of 12863569 is about 234.3080232680.

The spelling of 12863569 in words is "twelve million, eight hundred sixty-three thousand, five hundred sixty-nine".