9664225 has 6 divisors (see below), whose sum is σ = 11983670. Its totient is φ = 7731360.

The previous prime is 9664223. The next prime is 9664231. The reversal of 9664225 is 5224669.

It can be written as a sum of positive squares in 3 ways, for example, as 1317904 + 8346321 = 1148^2 + 2889^2 .

It is not a de Polignac number, because 9664225 - 2¹ = 9664223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9664223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193260 + ... + 193309.

Almost surely, 2^9664225 is an apocalyptic number.

It is an amenable number.

9664225 is a deficient number, since it is larger than the sum of its proper divisors (2319445).

9664225 is a wasteful number, since it uses less digits than its factorization.

9664225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386579 (or 386574 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 9664225 is about 3108.7336650154. The cubic root of 9664225 is about 213.0046139170.

It can be divided in two parts, 9664 and 225, that added together give a palindrome (9889).

The spelling of 9664225 in words is "nine million, six hundred sixty-four thousand, two hundred twenty-five".