9876666611 has 16 divisors (see below), whose sum is σ = 11483846400. Its totient is φ = 8318667168.

The previous prime is 9876666599. The next prime is 9876666617. The reversal of 9876666611 is 1166666789.

It is a happy number.

It is not a de Polignac number, because 9876666611 - 2¹⁴ = 9876650227 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9876666617) 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, 1488860 + ... + 1495478.

It is an arithmetic number, because the mean of its divisors is an integer number (717740400).

Almost surely, 2^9876666611 is an apocalyptic number.

9876666611 is a deficient number, since it is larger than the sum of its proper divisors (1607179789).

9876666611 is a wasteful number, since it uses less digits than its factorization.

9876666611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10298.

The product of its digits is 3919104, while the sum is 56.

The square root of 9876666611 is about 99381.4198479776. The cubic root of 9876666611 is about 2145.5409014387.

The spelling of 9876666611 in words is "nine billion, eight hundred seventy-six million, six hundred sixty-six thousand, six hundred eleven".