6805660 has 12 divisors (see below), whose sum is σ = 14291928. Its totient is φ = 2722256.

The previous prime is 6805649. The next prime is 6805663. The reversal of 6805660 is 665086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6805663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 170122 + ... + 170161.

It is an arithmetic number, because the mean of its divisors is an integer number (1190994).

Almost surely, 2^6805660 is an apocalyptic number.

It is an amenable number.

6805660 is an abundant number, since it is smaller than the sum of its proper divisors (7486268).

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

6805660 is a wasteful number, since it uses less digits than its factorization.

6805660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340292 (or 340290 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 6805660 is about 2608.7659918053. The cubic root of 6805660 is about 189.5061969602.

The spelling of 6805660 in words is "six million, eight hundred five thousand, six hundred sixty".