6686560 has 72 divisors (see below), whose sum is σ = 16722720. Its totient is φ = 2525952.

The previous prime is 6686539. The next prime is 6686569. The reversal of 6686560 is 656866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84601 + ... + 84679.

It is an arithmetic number, because the mean of its divisors is an integer number (232260).

Almost surely, 2^6686560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6686560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8361360).

6686560 is an abundant number, since it is smaller than the sum of its proper divisors (10036160).

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

6686560 is a wasteful number, since it uses less digits than its factorization.

6686560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 6686560 is about 2585.8383553502. The cubic root of 6686560 is about 188.3942233133.

The spelling of 6686560 in words is "six million, six hundred eighty-six thousand, five hundred sixty".