6688134072 has 48 divisors (see below), whose sum is σ = 18117665280. Its totient is φ = 2228889600.

The previous prime is 6688133989. The next prime is 6688134073. The reversal of 6688134072 is 2704318866.

It is a super-2 number, since 2×6688134072² = 89462274730094602368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688134073) 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, 490872 + ... + 504312.

It is an arithmetic number, because the mean of its divisors is an integer number (377451360).

Almost surely, 2^6688134072 is an apocalyptic number.

It is an amenable number.

6688134072 is an abundant number, since it is smaller than the sum of its proper divisors (11429531208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6688134072 is a wasteful number, since it uses less digits than its factorization.

6688134072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20364 (or 20357 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 6688134072 is about 81781.0129064198. The cubic root of 6688134072 is about 1884.0900534395.

The spelling of 6688134072 in words is "six billion, six hundred eighty-eight million, one hundred thirty-four thousand, seventy-two".