99563 has 2 divisors, whose sum is σ = 99564. Its totient is φ = 99562.

The previous prime is 99559. The next prime is 99571. The reversal of 99563 is 36599.

It is a weak prime.

It is an emirp because it is prime and its reverse (36599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99563 - 2² = 99559 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49781 + 49782.

It is an arithmetic number, because the mean of its divisors is an integer number (49782).

2⁹⁹⁵⁶³ is an apocalyptic number.

99563 is a deficient number, since it is larger than the sum of its proper divisors (1).

99563 is an equidigital number, since it uses as much as digits as its factorization.

99563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 32.

The square root of 99563 is about 315.5360518229. The cubic root of 99563 is about 46.3481771301.

The spelling of 99563 in words is "ninety-nine thousand, five hundred sixty-three".