9996805806 has 32 divisors (see below), whose sum is σ = 22664826240. Its totient is φ = 2914048224.

The previous prime is 9996805799. The next prime is 9996805807. The reversal of 9996805806 is 6085086999.

It is a super-2 number, since 2×9996805806² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9996805806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996805807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3371260 + ... + 3374223.

It is an arithmetic number, because the mean of its divisors is an integer number (708275820).

Almost surely, 2^9996805806 is an apocalyptic number.

9996805806 is an abundant number, since it is smaller than the sum of its proper divisors (12668020434).

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

9996805806 is a wasteful number, since it uses less digits than its factorization.

9996805806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745520.

The product of its (nonzero) digits is 8398080, while the sum is 60.

The square root of 9996805806 is about 99984.0277544369. The cubic root of 9996805806 is about 2154.2052761917.

The spelling of 9996805806 in words is "nine billion, nine hundred ninety-six million, eight hundred five thousand, eight hundred six".