9993663 has 12 divisors (see below), whose sum is σ = 14825928. Its totient is φ = 6482160.

The previous prime is 9993649. The next prime is 9993679. The reversal of 9993663 is 3663999.

It is not a de Polignac number, because 9993663 - 2⁸ = 9993407 is a prime.

9993663 is a modest number, since divided by 3663 gives 999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14673 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (1235494).

Almost surely, 2^9993663 is an apocalyptic number.

9993663 is a deficient number, since it is larger than the sum of its proper divisors (4832265).

9993663 is a wasteful number, since it uses less digits than its factorization.

9993663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30054 (or 30051 counting only the distinct ones).

The product of its digits is 236196, while the sum is 45.

The square root of 9993663 is about 3161.2755337047. The cubic root of 9993663 is about 215.3979505447.

It can be divided in two parts, 99936 and 63, that added together give a palindrome (99999).

The spelling of 9993663 in words is "nine million, nine hundred ninety-three thousand, six hundred sixty-three".