9645665 has 8 divisors (see below), whose sum is σ = 11613888. Its totient is φ = 7690480.

The previous prime is 9645659. The next prime is 9645667. The reversal of 9645665 is 5665469.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9645665 - 2¹⁰ = 9644641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9645667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (1451736).

Almost surely, 2^9645665 is an apocalyptic number.

It is an amenable number.

9645665 is a deficient number, since it is larger than the sum of its proper divisors (1968223).

9645665 is a wasteful number, since it uses less digits than its factorization.

9645665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6519.

The product of its digits is 194400, while the sum is 41.

The square root of 9645665 is about 3105.7470920859. The cubic root of 9645665 is about 212.8681691380.

The spelling of 9645665 in words is "nine million, six hundred forty-five thousand, six hundred sixty-five".