9668821668 has 48 divisors (see below), whose sum is σ = 24634471680. Its totient is φ = 2927216800.

The previous prime is 9668821667. The next prime is 9668821681. The reversal of 9668821668 is 8661288669.

It is a super-2 number, since 2×9668821668² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9668821667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110443 + ... + 177581.

It is an arithmetic number, because the mean of its divisors is an integer number (513218160).

Almost surely, 2^9668821668 is an apocalyptic number.

It is an amenable number.

9668821668 is an abundant number, since it is smaller than the sum of its proper divisors (14965650012).

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

9668821668 is a wasteful number, since it uses less digits than its factorization.

9668821668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68248 (or 68246 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 60.

The square root of 9668821668 is about 98330.1666224562. The cubic root of 9668821668 is about 2130.3837955948.

The spelling of 9668821668 in words is "nine billion, six hundred sixty-eight million, eight hundred twenty-one thousand, six hundred sixty-eight".