9664385 has 4 divisors (see below), whose sum is σ = 11597268. Its totient is φ = 7731504.

The previous prime is 9664367. The next prime is 9664399. The reversal of 9664385 is 5834669.

9664385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7091569 + 2572816 = 2663^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 9664385 - 2⁶ = 9664321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966434 + ... + 966443.

It is an arithmetic number, because the mean of its divisors is an integer number (2899317).

Almost surely, 2^9664385 is an apocalyptic number.

It is an amenable number.

9664385 is a deficient number, since it is larger than the sum of its proper divisors (1932883).

9664385 is a wasteful number, since it uses less digits than its factorization.

9664385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932882.

The product of its digits is 155520, while the sum is 41.

The square root of 9664385 is about 3108.7593988599. The cubic root of 9664385 is about 213.0057894053.

The spelling of 9664385 in words is "nine million, six hundred sixty-four thousand, three hundred eighty-five".