9665565 has 64 divisors (see below), whose sum is σ = 19493376. Its totient is φ = 3981312.

The previous prime is 9665527. The next prime is 9665567. The reversal of 9665565 is 5655669.

It is not a de Polignac number, because 9665565 - 2⁶ = 9665501 is a prime.

9665565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9665567) 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 63 ways as a sum of consecutive naturals, for example, 99597 + ... + 99693.

It is an arithmetic number, because the mean of its divisors is an integer number (304584).

Almost surely, 2^9665565 is an apocalyptic number.

It is an amenable number.

9665565 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

9665565 is a wasteful number, since it uses less digits than its factorization.

9665565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its digits is 243000, while the sum is 42.

The square root of 9665565 is about 3108.9491793852. The cubic root of 9665565 is about 213.0144582308.

The spelling of 9665565 in words is "nine million, six hundred sixty-five thousand, five hundred sixty-five".