6688206688 has 12 divisors (see below), whose sum is σ = 13167406980. Its totient is φ = 3344103328.

The previous prime is 6688206671. The next prime is 6688206697. The reversal of 6688206688 is 8866028866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104503198 + ... + 104503261.

It is an arithmetic number, because the mean of its divisors is an integer number (1097283915).

Almost surely, 2^6688206688 is an apocalyptic number.

It is an amenable number.

6688206688 is a deficient number, since it is larger than the sum of its proper divisors (6479200292).

6688206688 is a wasteful number, since it uses less digits than its factorization.

6688206688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209006469 (or 209006461 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 58.

The square root of 6688206688 is about 81781.4568713471. The cubic root of 6688206688 is about 1884.0968722117.

The spelling of 6688206688 in words is "six billion, six hundred eighty-eight million, two hundred six thousand, six hundred eighty-eight".