9916770217 has 8 divisors (see below), whose sum is σ = 10143449856. Its totient is φ = 9690744192.

The previous prime is 9916770179. The next prime is 9916770251. The reversal of 9916770217 is 7120776199.

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 9916770217 - 2¹⁹ = 9916245929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9916770287) 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 7 ways as a sum of consecutive naturals, for example, 132648 + ... + 193465.

It is an arithmetic number, because the mean of its divisors is an integer number (1267931232).

Almost surely, 2^9916770217 is an apocalyptic number.

It is an amenable number.

9916770217 is a deficient number, since it is larger than the sum of its proper divisors (226679639).

9916770217 is a wasteful number, since it uses less digits than its factorization.

9916770217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326807.

The product of its (nonzero) digits is 333396, while the sum is 49.

The square root of 9916770217 is about 99582.9815631165. The cubic root of 9916770217 is about 2148.4409261007.

The spelling of 9916770217 in words is "nine billion, nine hundred sixteen million, seven hundred seventy thousand, two hundred seventeen".