9664688 has 40 divisors (see below), whose sum is σ = 20690640. Its totient is φ = 4336640.

The previous prime is 9664679. The next prime is 9664691. The reversal of 9664688 is 8864669.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15356 + ... + 15972.

It is an arithmetic number, because the mean of its divisors is an integer number (517266).

Almost surely, 2^9664688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9664688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10345320).

9664688 is an abundant number, since it is smaller than the sum of its proper divisors (11025952).

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

9664688 is a wasteful number, since it uses less digits than its factorization.

9664688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 719 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 9664688 is about 3108.8081317444. The cubic root of 9664688 is about 213.0080154507.

The spelling of 9664688 in words is "nine million, six hundred sixty-four thousand, six hundred eighty-eight".