9968644 has 12 divisors (see below), whose sum is σ = 19937344. Its totient is φ = 4272264.

The previous prime is 9968641. The next prime is 9968657. The reversal of 9968644 is 4468699.

9968644 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 9968594 and 9968603.

It is not an unprimeable number, because it can be changed into a prime (9968641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177984 + ... + 178039.

Almost surely, 2^9968644 is an apocalyptic number.

It is an amenable number.

9968644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9968644 is a wasteful number, since it uses less digits than its factorization.

9968644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356034 (or 356032 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 9968644 is about 3157.3159487134. The cubic root of 9968644 is about 215.2180517188.

Subtracting from 9968644 its reverse (4468699), we obtain a palindrome (5499945).

The spelling of 9968644 in words is "nine million, nine hundred sixty-eight thousand, six hundred forty-four".