6686807340 has 24 divisors (see below), whose sum is σ = 18723060720. Its totient is φ = 1783148608.

The previous prime is 6686807339. The next prime is 6686807419. The reversal of 6686807340 is 437086866.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6686807340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55723335 + ... + 55723454.

It is an arithmetic number, because the mean of its divisors is an integer number (780127530).

Almost surely, 2^6686807340 is an apocalyptic number.

6686807340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6686807340 is an abundant number, since it is smaller than the sum of its proper divisors (12036253380).

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

6686807340 is a wasteful number, since it uses less digits than its factorization.

6686807340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111446801 (or 111446799 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 6686807340 is about 81772.9010124992. The cubic root of 6686807340 is about 1883.9654622434.

The spelling of 6686807340 in words is "six billion, six hundred eighty-six million, eight hundred seven thousand, three hundred forty".