9911648 has 24 divisors (see below), whose sum is σ = 19785528. Its totient is φ = 4886784.

The previous prime is 9911647. The next prime is 9911659. The reversal of 9911648 is 8461199.

It is a happy number.

9911648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9911647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (824397).

Almost surely, 2^9911648 is an apocalyptic number.

It is an amenable number.

9911648 is a deficient number, since it is larger than the sum of its proper divisors (9873880).

9911648 is a wasteful number, since it uses less digits than its factorization.

9911648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326 (or 4318 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 9911648 is about 3148.2769890847. The cubic root of 9911648 is about 214.8070957664.

The spelling of 9911648 in words is "nine million, nine hundred eleven thousand, six hundred forty-eight".