9643648 has 64 divisors (see below), whose sum is σ = 22521600. Its totient is φ = 4027392.

The previous prime is 9643603. The next prime is 9643661. The reversal of 9643648 is 8463469.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9643648.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41998 + ... + 42226.

It is an arithmetic number, because the mean of its divisors is an integer number (351900).

Almost surely, 2^9643648 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 9643648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11260800).

9643648 is an abundant number, since it is smaller than the sum of its proper divisors (12877952).

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

9643648 is a wasteful number, since it uses less digits than its factorization.

9643648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 285 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 9643648 is about 3105.4223545276. The cubic root of 9643648 is about 212.8533305196.

The spelling of 9643648 in words is "nine million, six hundred forty-three thousand, six hundred forty-eight".