9964663 has 4 divisors (see below), whose sum is σ = 9971208. Its totient is φ = 9958120.

The previous prime is 9964651. The next prime is 9964667. The reversal of 9964663 is 3664699.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9964663 - 2⁵ = 9964631 is a prime.

It is a d-powerful number, because it can be written as 9⁴ + 9⁷ + 6² + 4⁸ + 6⁶ + 6⁷ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9964667) 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 3 ways as a sum of consecutive naturals, for example, 345 + ... + 4477.

It is an arithmetic number, because the mean of its divisors is an integer number (2492802).

Almost surely, 2^9964663 is an apocalyptic number.

9964663 is a deficient number, since it is larger than the sum of its proper divisors (6545).

9964663 is a wasteful number, since it uses less digits than its factorization.

9964663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6544.

The product of its digits is 209952, while the sum is 43.

The square root of 9964663 is about 3156.6854452099. The cubic root of 9964663 is about 215.1893986361.

The spelling of 9964663 in words is "nine million, nine hundred sixty-four thousand, six hundred sixty-three".