9665679171 has 16 divisors (see below), whose sum is σ = 13650138144. Its totient is φ = 6062751744.

The previous prime is 9665679143. The next prime is 9665679173. The reversal of 9665679171 is 1719765669.

It is not a de Polignac number, because 9665679171 - 2¹¹ = 9665677123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9665679173) 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, 134611 + ... + 193523.

It is an arithmetic number, because the mean of its divisors is an integer number (853133634).

Almost surely, 2^9665679171 is an apocalyptic number.

9665679171 is a deficient number, since it is larger than the sum of its proper divisors (3984458973).

9665679171 is a wasteful number, since it uses less digits than its factorization.

9665679171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62150.

The product of its digits is 4286520, while the sum is 57.

The square root of 9665679171 is about 98314.1860109720. The cubic root of 9665679171 is about 2130.1529694632.

The spelling of 9665679171 in words is "nine billion, six hundred sixty-five million, six hundred seventy-nine thousand, one hundred seventy-one".