6666666666 is nontrivially palindromic in base 10.
It is a nude number because it is divisible by every one of its digits.
6666666666 is a nontrivial repdigit in base 10.
It is a plaindrome in base 10.
It is a nialpdrome in base 10.
It is a zygodrome in base 10.
Almost surely, 26666666666 is an apocalyptic number.
6666666666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 6666666666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7478424576).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6666666666 is a wasteful number, since it uses less digits than its factorization.
6666666666 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9419.
The square root of 6666666666 is about 81649.6580886901. The cubic root of 6666666666 is about 1882.0720576993.
The spelling of 6666666666 in words is "six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".