9665005669 has 16 divisors (see below), whose sum is σ = 10583322624. Its totient is φ = 8753374000.

The previous prime is 9665005661. The next prime is 9665005741.

It is a happy number.

9665005669 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9665005669 - 2³ = 9665005661 is a prime.

It is a super-2 number, since 2×9665005669² (a number of 21 digits) 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 (9665005661) 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, 4109844 + ... + 4112194.

It is an arithmetic number, because the mean of its divisors is an integer number (661457664).

Almost surely, 2^9665005669 is an apocalyptic number.

It is an amenable number.

9665005669 is a deficient number, since it is larger than the sum of its proper divisors (918316955).

9665005669 is a wasteful number, since it uses less digits than its factorization.

9665005669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The square root of 9665005669 is about 98310.7606979012. The cubic root of 9665005669 is about 2130.1034921465.

The spelling of 9665005669 in words is "nine billion, six hundred sixty-five million, five thousand, six hundred sixty-nine".