6647042860 has 24 divisors (see below), whose sum is σ = 14013115200. Its totient is φ = 2648469504.

The previous prime is 6647042851. The next prime is 6647042867. The reversal of 6647042860 is 682407466.

It is not an unprimeable number, because it can be changed into a prime (6647042867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641460 + ... + 651739.

It is an arithmetic number, because the mean of its divisors is an integer number (583879800).

Almost surely, 2^6647042860 is an apocalyptic number.

It is an amenable number.

6647042860 is an abundant number, since it is smaller than the sum of its proper divisors (7366072340).

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

6647042860 is a wasteful number, since it uses less digits than its factorization.

6647042860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293465 (or 1293463 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 6647042860 is about 81529.3987467098. The cubic root of 6647042860 is about 1880.2235719478.

The spelling of 6647042860 in words is "six billion, six hundred forty-seven million, forty-two thousand, eight hundred sixty".