6664851705 has 8 divisors (see below), whose sum is σ = 10663762752. Its totient is φ = 3554587568.

The previous prime is 6664851701. The next prime is 6664851793. The reversal of 6664851705 is 5071584666.

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 6664851705 - 2² = 6664851701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6664851701) 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, 222161709 + ... + 222161738.

It is an arithmetic number, because the mean of its divisors is an integer number (1332970344).

Almost surely, 2^6664851705 is an apocalyptic number.

It is an amenable number.

6664851705 is a deficient number, since it is larger than the sum of its proper divisors (3998911047).

6664851705 is a wasteful number, since it uses less digits than its factorization.

6664851705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444323455.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 6664851705 is about 81638.5430112517. The cubic root of 6664851705 is about 1881.9012478285.

The spelling of 6664851705 in words is "six billion, six hundred sixty-four million, eight hundred fifty-one thousand, seven hundred five".