9666320 has 20 divisors (see below), whose sum is σ = 22474380. Its totient is φ = 3866496.

The previous prime is 9666313. The next prime is 9666323. The reversal of 9666320 is 236669.

9666320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 7772944 = 1376^2 + 2788^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9666323) 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, 60335 + ... + 60494.

It is an arithmetic number, because the mean of its divisors is an integer number (1123719).

Almost surely, 2^9666320 is an apocalyptic number.

It is an amenable number.

9666320 is an abundant number, since it is smaller than the sum of its proper divisors (12808060).

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

9666320 is a wasteful number, since it uses less digits than its factorization.

9666320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120842 (or 120836 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 9666320 is about 3109.0706006780. The cubic root of 9666320 is about 213.0200044397.

The spelling of 9666320 in words is "nine million, six hundred sixty-six thousand, three hundred twenty".