6688747468 has 12 divisors (see below), whose sum is σ = 12605716480. Its totient is φ = 3087114192.

The previous prime is 6688747399. The next prime is 6688747487. The reversal of 6688747468 is 8647478866.

It is a super-2 number, since 2×6688747468² = 89478685381352822048, which contains 22 as substring.

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, 64314828 + ... + 64314931.

Almost surely, 2^6688747468 is an apocalyptic number.

It is an amenable number.

6688747468 is a deficient number, since it is larger than the sum of its proper divisors (5916969012).

6688747468 is a wasteful number, since it uses less digits than its factorization.

6688747468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128629776 (or 128629774 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 64.

The square root of 6688747468 is about 81784.7630552293. The cubic root of 6688747468 is about 1884.1476508681.

The spelling of 6688747468 in words is "six billion, six hundred eighty-eight million, seven hundred forty-seven thousand, four hundred sixty-eight".