8866666689 has 4 divisors (see below), whose sum is σ = 11822222256. Its totient is φ = 5911111124.

The previous prime is 8866666667. The next prime is 8866666709. The reversal of 8866666689 is 9866666688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8866666689 - 2⁵ = 8866666657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8866666619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477777779 + ... + 1477777784.

It is an arithmetic number, because the mean of its divisors is an integer number (2955555564).

Almost surely, 2^8866666689 is an apocalyptic number.

It is an amenable number.

8866666689 is a deficient number, since it is larger than the sum of its proper divisors (2955555567).

8866666689 is a wasteful number, since it uses less digits than its factorization.

8866666689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955555566.

The product of its digits is 214990848, while the sum is 69.

The square root of 8866666689 is about 94162.9793974256. The cubic root of 8866666689 is about 2069.7606582244.

Subtracting 8866666689 from its reverse (9866666688), we obtain a palindrome (999999999).

The spelling of 8866666689 in words is "eight billion, eight hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-nine".