9217664 has 64 divisors (see below), whose sum is σ = 19975680. Its totient is φ = 4224000.

The previous prime is 9217657. The next prime is 9217667. The reversal of 9217664 is 4667129.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (9217667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91214 + ... + 91314.

It is an arithmetic number, because the mean of its divisors is an integer number (312120).

Almost surely, 2^9217664 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 9217664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9987840).

9217664 is an abundant number, since it is smaller than the sum of its proper divisors (10758016).

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

9217664 is a wasteful number, since it uses less digits than its factorization.

9217664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 157 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 9217664 is about 3036.0606054557. The cubic root of 9217664 is about 209.6719291618.

The spelling of 9217664 in words is "nine million, two hundred seventeen thousand, six hundred sixty-four".