9665650 has 24 divisors (see below), whose sum is σ = 18213120. Its totient is φ = 3815760.

The previous prime is 9665641. The next prime is 9665653. The reversal of 9665650 is 565669.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9665653) 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 11 ways as a sum of consecutive naturals, for example, 2727 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (758880).

Almost surely, 2^9665650 is an apocalyptic number.

9665650 is a deficient number, since it is larger than the sum of its proper divisors (8547470).

9665650 is a wasteful number, since it uses less digits than its factorization.

9665650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 9665650 is about 3108.9628495690. The cubic root of 9665650 is about 213.0150826529.

The spelling of 9665650 in words is "nine million, six hundred sixty-five thousand, six hundred fifty".