9640686968 has 32 divisors (see below), whose sum is σ = 19724808960. Its totient is φ = 4380970080.

The previous prime is 9640686943. The next prime is 9640687003. The reversal of 9640686968 is 8696860469.

9640686968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 98187²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 9640686968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380471 + ... + 405017.

It is an arithmetic number, because the mean of its divisors is an integer number (616400280).

Almost surely, 2^9640686968 is an apocalyptic number.

It is an amenable number.

9640686968 is an abundant number, since it is smaller than the sum of its proper divisors (10084121992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9640686968 is a wasteful number, since it uses less digits than its factorization.

9640686968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29027 (or 29023 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 62.

The square root of 9640686968 is about 98186.9999949077. Note that the first 5 decimals coincide. The cubic root of 9640686968 is about 2128.3154311988.

The spelling of 9640686968 in words is "nine billion, six hundred forty million, six hundred eighty-six thousand, nine hundred sixty-eight".