6668504685 has 32 divisors (see below), whose sum is σ = 11934720000. Its totient is φ = 3532655808.

The previous prime is 6668504681. The next prime is 6668504749. The reversal of 6668504685 is 5864058666.

It is a happy number.

It is not a de Polignac number, because 6668504685 - 2² = 6668504681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668504681) 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 31 ways as a sum of consecutive naturals, for example, 145645 + ... + 185874.

It is an arithmetic number, because the mean of its divisors is an integer number (372960000).

Almost surely, 2^6668504685 is an apocalyptic number.

It is an amenable number.

6668504685 is a deficient number, since it is larger than the sum of its proper divisors (5266215315).

6668504685 is a wasteful number, since it uses less digits than its factorization.

6668504685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331682 (or 331676 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The square root of 6668504685 is about 81660.9128347216. The cubic root of 6668504685 is about 1882.2450060163.

The spelling of 6668504685 in words is "six billion, six hundred sixty-eight million, five hundred four thousand, six hundred eighty-five".