9906820801 has 8 divisors (see below), whose sum is σ = 9987160064. Its totient is φ = 9826518240.

The previous prime is 9906820793. The next prime is 9906820811. The reversal of 9906820801 is 1080286099.

It is a happy number.

9906820801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9906820801 - 2³ = 9906820793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906820811) by changing a digit.

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, 866941 + ... + 878293.

It is an arithmetic number, because the mean of its divisors is an integer number (1248395008).

Almost surely, 2^9906820801 is an apocalyptic number.

It is an amenable number.

9906820801 is a deficient number, since it is larger than the sum of its proper divisors (80339263).

9906820801 is a wasteful number, since it uses less digits than its factorization.

9906820801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 9906820801 is about 99533.0136236214. The cubic root of 9906820801 is about 2147.7221811617.

The spelling of 9906820801 in words is "nine billion, nine hundred six million, eight hundred twenty thousand, eight hundred one".