8687317 has 2 divisors, whose sum is σ = 8687318. Its totient is φ = 8687316.

The previous prime is 8687309. The next prime is 8687321. The reversal of 8687317 is 7137868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8608356 + 78961 = 2934^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 8687317 - 2³ = 8687309 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8687317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8687387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4343658 + 4343659.

It is an arithmetic number, because the mean of its divisors is an integer number (4343659).

Almost surely, 2^8687317 is an apocalyptic number.

It is an amenable number.

8687317 is a deficient number, since it is larger than the sum of its proper divisors (1).

8687317 is an equidigital number, since it uses as much as digits as its factorization.

8687317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 8687317 is about 2947.4254867596. The cubic root of 8687317 is about 205.5710195113.

The spelling of 8687317 in words is "eight million, six hundred eighty-seven thousand, three hundred seventeen".