9665217 has 16 divisors (see below), whose sum is σ = 14669760. Its totient is φ = 6285600.

The previous prime is 9665209. The next prime is 9665269. The reversal of 9665217 is 7125669.

9665217 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9665217 - 2³ = 9665209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9665287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3259 + ... + 5472.

It is an arithmetic number, because the mean of its divisors is an integer number (916860).

Almost surely, 2^9665217 is an apocalyptic number.

It is an amenable number.

9665217 is a deficient number, since it is larger than the sum of its proper divisors (5004543).

9665217 is a wasteful number, since it uses less digits than its factorization.

9665217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781 (or 8775 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 9665217 is about 3108.8932114179. The cubic root of 9665217 is about 213.0119017353.

It can be divided in two parts, 96652 and 17, that added together give a palindrome (96669).

The spelling of 9665217 in words is "nine million, six hundred sixty-five thousand, two hundred seventeen".