9993563 has 16 divisors (see below), whose sum is σ = 11120640. Its totient is φ = 8967240.

The previous prime is 9993551. The next prime is 9993611. The reversal of 9993563 is 3653999.

It is not a de Polignac number, because 9993563 - 2¹⁸ = 9731419 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (196830) is a multiple of the sum of its prime factors (135).

It is not an unprimeable number, because it can be changed into a prime (9995563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212606 + ... + 212652.

It is an arithmetic number, because the mean of its divisors is an integer number (695040).

Almost surely, 2^9993563 is an apocalyptic number.

9993563 is a deficient number, since it is larger than the sum of its proper divisors (1127077).

9993563 is an equidigital number, since it uses as much as digits as its factorization.

9993563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 97 counting only the distinct ones).

The product of its digits is 196830, while the sum is 44.

The square root of 9993563 is about 3161.2597172646. The cubic root of 9993563 is about 215.3972320939.

The spelling of 9993563 in words is "nine million, nine hundred ninety-three thousand, five hundred sixty-three".