9666563 has 2 divisors, whose sum is σ = 9666564. Its totient is φ = 9666562.

The previous prime is 9666551. The next prime is 9666571. The reversal of 9666563 is 3656669.

It is a strong prime.

It is an emirp because it is prime and its reverse (3656669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9666563 - 2¹⁶ = 9601027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9666563.

It is not a weakly prime, because it can be changed into another prime (9666533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833281 + 4833282.

It is an arithmetic number, because the mean of its divisors is an integer number (4833282).

Almost surely, 2^9666563 is an apocalyptic number.

9666563 is a deficient number, since it is larger than the sum of its proper divisors (1).

9666563 is an equidigital number, since it uses as much as digits as its factorization.

9666563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 9666563 is about 3109.1096796350. The cubic root of 9666563 is about 213.0217894495.

The spelling of 9666563 in words is "nine million, six hundred sixty-six thousand, five hundred sixty-three".