9665669 has 8 divisors (see below), whose sum is σ = 10651872. Its totient is φ = 8714160.

The previous prime is 9665657. The next prime is 9665701.

It is a happy number.

9665669 is nontrivially palindromic in base 10.

9665669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9665669 - 2⁴ = 9665653 is a prime.

It is a super-2 number, since 2×9665669² = 186850314435122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9665609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8087 + ... + 9204.

It is an arithmetic number, because the mean of its divisors is an integer number (1331484).

Almost surely, 2^9665669 is an apocalyptic number.

It is an amenable number.

9665669 is a deficient number, since it is larger than the sum of its proper divisors (986203).

9665669 is a wasteful number, since it uses less digits than its factorization.

9665669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17347.

The product of its digits is 524880, while the sum is 47.

The square root of 9665669 is about 3108.9659052489. The cubic root of 9665669 is about 213.0152222291.

The spelling of 9665669 in words is "nine million, six hundred sixty-five thousand, six hundred sixty-nine".