6683839993 has 4 divisors (see below), whose sum is σ = 6700676260. Its totient is φ = 6667003728.

The previous prime is 6683839979. The next prime is 6683840027. The reversal of 6683839993 is 3999383866.

6683839993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3999383866 = 2 ⋅1999691933.

It can be written as a sum of positive squares in 2 ways, for example, as 2072343529 + 4611496464 = 45523^2 + 67908^2 .

It is a cyclic number.

It is not a de Polignac number, because 6683839993 - 2¹³ = 6683831801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6683839973) 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 3 ways as a sum of consecutive naturals, for example, 8417538 + ... + 8418331.

It is an arithmetic number, because the mean of its divisors is an integer number (1675169065).

Almost surely, 2^6683839993 is an apocalyptic number.

It is an amenable number.

6683839993 is a deficient number, since it is larger than the sum of its proper divisors (16836267).

6683839993 is a wasteful number, since it uses less digits than its factorization.

6683839993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836266.

The product of its digits is 45349632, while the sum is 64.

The square root of 6683839993 is about 81754.7551705710. The cubic root of 6683839993 is about 1883.6867439596.

The spelling of 6683839993 in words is "six billion, six hundred eighty-three million, eight hundred thirty-nine thousand, nine hundred ninety-three".