6683599985 has 16 divisors (see below), whose sum is σ = 8473420800. Its totient is φ = 5052659136.

The previous prime is 6683599973. The next prime is 6683599987. The reversal of 6683599985 is 5899953866.

It is a cyclic number.

It is not a de Polignac number, because 6683599985 - 2⁸ = 6683599729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6683599987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483545 + ... + 497174.

It is an arithmetic number, because the mean of its divisors is an integer number (529588800).

Almost surely, 2^6683599985 is an apocalyptic number.

It is an amenable number.

6683599985 is a deficient number, since it is larger than the sum of its proper divisors (1789820815).

6683599985 is a wasteful number, since it uses less digits than its factorization.

6683599985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980800.

The product of its digits is 125971200, while the sum is 68.

The square root of 6683599985 is about 81753.2873039366. The cubic root of 6683599985 is about 1883.6641967761.

The spelling of 6683599985 in words is "six billion, six hundred eighty-three million, five hundred ninety-nine thousand, nine hundred eighty-five".