6765328647 has 72 divisors (see below), whose sum is σ = 12477847200. Its totient is φ = 3456604800.

The previous prime is 6765328643. The next prime is 6765328663. The reversal of 6765328647 is 7468235676.

6765328647 is a `hidden beast` number, since 67 + 6 + 532 + 8 + 6 + 47 = 666.

It is not a de Polignac number, because 6765328647 - 2² = 6765328643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6765328593 and 6765328602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6765328643) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 457729 + ... + 472277.

Almost surely, 2^6765328647 is an apocalyptic number.

6765328647 is a deficient number, since it is larger than the sum of its proper divisors (5712518553).

6765328647 is a wasteful number, since it uses less digits than its factorization.

6765328647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14645 (or 14631 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The square root of 6765328647 is about 82251.6178989812. The cubic root of 6765328647 is about 1891.3110773726.

The spelling of 6765328647 in words is "six billion, seven hundred sixty-five million, three hundred twenty-eight thousand, six hundred forty-seven".