6683839994 has 8 divisors (see below), whose sum is σ = 10796972340. Its totient is φ = 3084849216.

The previous prime is 6683839979. The next prime is 6683840027. The reversal of 6683839994 is 4999383866.

It can be written as a sum of positive squares in 2 ways, for example, as 6098829025 + 585010969 = 78095^2 + 24187^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 6683839994.

It is an unprimeable number.

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, 128535359 + ... + 128535410.

Almost surely, 2^6683839994 is an apocalyptic number.

6683839994 is a deficient number, since it is larger than the sum of its proper divisors (4113132346).

6683839994 is a wasteful number, since it uses less digits than its factorization.

6683839994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257070784.

The product of its digits is 60466176, while the sum is 65.

The square root of 6683839994 is about 81754.7551766868. The cubic root of 6683839994 is about 1883.6867440535.

The spelling of 6683839994 in words is "six billion, six hundred eighty-three million, eight hundred thirty-nine thousand, nine hundred ninety-four".