6647806328 has 16 divisors (see below), whose sum is σ = 12466077000. Its totient is φ = 3323519136.

The previous prime is 6647806307. The next prime is 6647806331. The reversal of 6647806328 is 8236087466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33758 + ... + 120146.

Almost surely, 2^6647806328 is an apocalyptic number.

It is an amenable number.

6647806328 is a deficient number, since it is larger than the sum of its proper divisors (5818270672).

6647806328 is a wasteful number, since it uses less digits than its factorization.

6647806328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96014 (or 96010 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The square root of 6647806328 is about 81534.0807760779. The cubic root of 6647806328 is about 1880.2955556155.

The spelling of 6647806328 in words is "six billion, six hundred forty-seven million, eight hundred six thousand, three hundred twenty-eight".