9966807696 has 80 divisors (see below), whose sum is σ = 27087105600. Its totient is φ = 3153314304.

The previous prime is 9966807691. The next prime is 9966807709. The reversal of 9966807696 is 6967086699.

It is not an unprimeable number, because it can be changed into a prime (9966807691) 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, 21450 + ... + 142806.

It is an arithmetic number, because the mean of its divisors is an integer number (338588820).

Almost surely, 2^9966807696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9966807696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13543552800).

9966807696 is an abundant number, since it is smaller than the sum of its proper divisors (17120297904).

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

9966807696 is a wasteful number, since it uses less digits than its factorization.

9966807696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121456 (or 121450 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 66.

The square root of 9966807696 is about 99833.9005348384. The cubic root of 9966807696 is about 2152.0483594482.

The spelling of 9966807696 in words is "nine billion, nine hundred sixty-six million, eight hundred seven thousand, six hundred ninety-six".