8663579 has 2 divisors, whose sum is σ = 8663580. Its totient is φ = 8663578.

The previous prime is 8663537. The next prime is 8663593. The reversal of 8663579 is 9753668.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8663579 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8663509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331789 + 4331790.

It is an arithmetic number, because the mean of its divisors is an integer number (4331790).

Almost surely, 2^8663579 is an apocalyptic number.

8663579 is a deficient number, since it is larger than the sum of its proper divisors (1).

8663579 is an equidigital number, since it uses as much as digits as its factorization.

8663579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 8663579 is about 2943.3958279511. The cubic root of 8663579 is about 205.3836085102.

The spelling of 8663579 in words is "eight million, six hundred sixty-three thousand, five hundred seventy-nine".