12885617 has 2 divisors, whose sum is σ = 12885618. Its totient is φ = 12885616.

The previous prime is 12885581. The next prime is 12885623. The reversal of 12885617 is 71658821.

12885617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 1079521 = 3436^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 12885617 - 2¹⁰ = 12884593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12885017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6442808 + 6442809.

It is an arithmetic number, because the mean of its divisors is an integer number (6442809).

Almost surely, 2^12885617 is an apocalyptic number.

It is an amenable number.

12885617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12885617 is an equidigital number, since it uses as much as digits as its factorization.

12885617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 12885617 is about 3589.6541616150. The cubic root of 12885617 is about 234.4418138877.

The spelling of 12885617 in words is "twelve million, eight hundred eighty-five thousand, six hundred seventeen".