6688809351 has 12 divisors (see below), whose sum is σ = 11041844112. Its totient is φ = 3822176736.

The previous prime is 6688809349. The next prime is 6688809373. The reversal of 6688809351 is 1539088866.

It is not a de Polignac number, because 6688809351 - 2¹ = 6688809349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688809311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53085726 + ... + 53085851.

It is an arithmetic number, because the mean of its divisors is an integer number (920153676).

Almost surely, 2^6688809351 is an apocalyptic number.

6688809351 is a deficient number, since it is larger than the sum of its proper divisors (4353034761).

6688809351 is a wasteful number, since it uses less digits than its factorization.

6688809351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106171590 (or 106171587 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 6688809351 is about 81785.1413827720. The cubic root of 6688809351 is about 1884.1534614402.

The spelling of 6688809351 in words is "six billion, six hundred eighty-eight million, eight hundred nine thousand, three hundred fifty-one".