6684666667 has 8 divisors (see below), whose sum is σ = 7642416096. Its totient is φ = 5727616512.

The previous prime is 6684666661. The next prime is 6684666671. The reversal of 6684666667 is 7666664866.

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 6684666667 - 2⁷ = 6684666539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6684666661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154168 + ... + 192709.

It is an arithmetic number, because the mean of its divisors is an integer number (955302012).

Almost surely, 2^6684666667 is an apocalyptic number.

6684666667 is a deficient number, since it is larger than the sum of its proper divisors (957749429).

6684666667 is a wasteful number, since it uses less digits than its factorization.

6684666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349637.

The product of its digits is 62705664, while the sum is 61.

The square root of 6684666667 is about 81759.8108302606. The cubic root of 6684666667 is about 1883.7644004496.

The spelling of 6684666667 in words is "six billion, six hundred eighty-four million, six hundred sixty-six thousand, six hundred sixty-seven".