9665679166 has 48 divisors (see below), whose sum is σ = 17244786384. Its totient is φ = 4036032000.

The previous prime is 9665679143. The next prime is 9665679173. The reversal of 9665679166 is 6619765669.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 656526 + ... + 671086.

It is an arithmetic number, because the mean of its divisors is an integer number (359266383).

Almost surely, 2^9665679166 is an apocalyptic number.

9665679166 is a deficient number, since it is larger than the sum of its proper divisors (7579107218).

9665679166 is a wasteful number, since it uses less digits than its factorization.

9665679166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809 (or 14798 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 61.

The square root of 9665679166 is about 98314.1859855433. The cubic root of 9665679166 is about 2130.1529690959.

The spelling of 9665679166 in words is "nine billion, six hundred sixty-five million, six hundred seventy-nine thousand, one hundred sixty-six".