9999563 has 8 divisors (see below), whose sum is σ = 11644128. Its totient is φ = 8409024.

The previous prime is 9999533. The next prime is 9999593. The reversal of 9999563 is 3659999.

It is an interprime number because it is at equal distance from previous prime (9999533) and next prime (9999593).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9999563 - 2¹⁰ = 9998539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999533) 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 in 7 ways as a sum of consecutive naturals, for example, 13106 + ... + 13847.

It is an arithmetic number, because the mean of its divisors is an integer number (1455516).

Almost surely, 2^9999563 is an apocalyptic number.

9999563 is a deficient number, since it is larger than the sum of its proper divisors (1644565).

9999563 is a wasteful number, since it uses less digits than its factorization.

9999563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27013.

The product of its digits is 590490, while the sum is 50.

The square root of 9999563 is about 3162.2085636466. The cubic root of 9999563 is about 215.4403306643.

The spelling of 9999563 in words is "nine million, nine hundred ninety-nine thousand, five hundred sixty-three".