6681003728 has 40 divisors (see below), whose sum is σ = 14849966208. Its totient is φ = 2852387712.

The previous prime is 6681003713. The next prime is 6681003733. The reversal of 6681003728 is 8273001866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83951 + ... + 142862.

Almost surely, 2^6681003728 is an apocalyptic number.

It is an amenable number.

6681003728 is an abundant number, since it is smaller than the sum of its proper divisors (8168962480).

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

6681003728 is a wasteful number, since it uses less digits than its factorization.

6681003728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227091 (or 227085 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 6681003728 is about 81737.4071524171. The cubic root of 6681003728 is about 1883.4202608862.

The spelling of 6681003728 in words is "six billion, six hundred eighty-one million, three thousand, seven hundred twenty-eight".