6800639999 has 8 divisors (see below), whose sum is σ = 7579661040. Its totient is φ = 6063728256.

The previous prime is 6800639927. The next prime is 6800640031. The reversal of 6800639999 is 9999360086.

It is a happy number.

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 6800639999 - 2¹² = 6800635903 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 (6800639099) 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, 10526984 + ... + 10527629.

It is an arithmetic number, because the mean of its divisors is an integer number (947457630).

Almost surely, 2^6800639999 is an apocalyptic number.

6800639999 is a deficient number, since it is larger than the sum of its proper divisors (779021041).

6800639999 is a wasteful number, since it uses less digits than its factorization.

6800639999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054649.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The square root of 6800639999 is about 82465.9929849875. The cubic root of 6800639999 is about 1894.5959088528.

The spelling of 6800639999 in words is "six billion, eight hundred million, six hundred thirty-nine thousand, nine hundred ninety-nine".