9691881696 has 432 divisors, whose sum is σ = 34485665760. Its totient is φ = 2564997120.

The previous prime is 9691881653. The next prime is 9691881733. The reversal of 9691881696 is 6961881969.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

9691881696 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17032900 + ... + 17033468.

It is an arithmetic number, because the mean of its divisors is an integer number (79827930).

Almost surely, 2^9691881696 is an apocalyptic number.

9691881696 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9691881696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17242832880).

9691881696 is an abundant number, since it is smaller than the sum of its proper divisors (24793784064).

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

9691881696 is a wasteful number, since it uses less digits than its factorization.

9691881696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 669 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 9691881696 is about 98447.3549466922. The cubic root of 9691881696 is about 2132.0760978485.

The spelling of 9691881696 in words is "nine billion, six hundred ninety-one million, eight hundred eighty-one thousand, six hundred ninety-six".