9663638 has 8 divisors (see below), whose sum is σ = 14569632. Its totient is φ = 4807096.

The previous prime is 9663629. The next prime is 9663677. The reversal of 9663638 is 8363669.

9663638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 9663595 and 9663604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11870 + ... + 12657.

It is an arithmetic number, because the mean of its divisors is an integer number (1821204).

Almost surely, 2^9663638 is an apocalyptic number.

9663638 is a deficient number, since it is larger than the sum of its proper divisors (4905994).

9663638 is a wasteful number, since it uses less digits than its factorization.

9663638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24726.

The product of its digits is 139968, while the sum is 41.

The square root of 9663638 is about 3108.6392521488. The cubic root of 9663638 is about 213.0003012332. Note that the first 3 decimals are identical.

Subtracting from 9663638 its sum of digits (41), we obtain a cube (9663597 = 213³).

It can be divided in two parts, 9663 and 638, that added together give a palindrome (10301).

The spelling of 9663638 in words is "nine million, six hundred sixty-three thousand, six hundred thirty-eight".