6841720660 has 12 divisors (see below), whose sum is σ = 14367613428. Its totient is φ = 2736688256.

The previous prime is 6841720631. The next prime is 6841720667. The reversal of 6841720660 is 660271486.

It can be written as a sum of positive squares in 2 ways, for example, as 1289384464 + 5552336196 = 35908^2 + 74514^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6841720667) by changing a digit.

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, 171042997 + ... + 171043036.

It is an arithmetic number, because the mean of its divisors is an integer number (1197301119).

Almost surely, 2^6841720660 is an apocalyptic number.

It is an amenable number.

6841720660 is an abundant number, since it is smaller than the sum of its proper divisors (7525892768).

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

6841720660 is a wasteful number, since it uses less digits than its factorization.

6841720660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342086042 (or 342086040 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 6841720660 is about 82714.6943414530. The cubic root of 6841720660 is about 1898.4031513847.

It can be divided in two parts, 684 and 1720660, that added together give a square (1721344 = 1312²).

The spelling of 6841720660 in words is "six billion, eight hundred forty-one million, seven hundred twenty thousand, six hundred sixty".