6660785039 has 8 divisors (see below), whose sum is σ = 6735210720. Its totient is φ = 6586477056.

The previous prime is 6660785003. The next prime is 6660785059. The reversal of 6660785039 is 9305870666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6660785039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660785059) 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, 86942 + ... + 144500.

It is an arithmetic number, because the mean of its divisors is an integer number (841901340).

Almost surely, 2^6660785039 is an apocalyptic number.

6660785039 is a deficient number, since it is larger than the sum of its proper divisors (74425681).

6660785039 is a wasteful number, since it uses less digits than its factorization.

6660785039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58849.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 6660785039 is about 81613.6326786156. The cubic root of 6660785039 is about 1881.5184125591.

The spelling of 6660785039 in words is "six billion, six hundred sixty million, seven hundred eighty-five thousand, thirty-nine".