6666336666 has 32 divisors (see below), whose sum is σ = 16160817600. Its totient is φ = 2020101840.

The previous prime is 6666336659. The next prime is 6666336707.

6666336666 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5610801 + ... + 5611988.

It is an arithmetic number, because the mean of its divisors is an integer number (505025550).

Almost surely, 2^6666336666 is an apocalyptic number.

6666336666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6666336666 is an abundant number, since it is smaller than the sum of its proper divisors (9494480934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666336666 is a wasteful number, since it uses less digits than its factorization.

6666336666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222811 (or 11222805 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 54.

The square root of 6666336666 is about 81647.6372346438. The cubic root of 6666336666 is about 1882.0410029980.

The spelling of 6666336666 in words is "six billion, six hundred sixty-six million, three hundred thirty-six thousand, six hundred sixty-six".