6680340 has 96 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 1748736.

The previous prime is 6680339. The next prime is 6680341. The reversal of 6680340 is 430866.

It is an interprime number because it is at equal distance from previous prime (6680339) and next prime (6680341).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6680341) 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 31 ways as a sum of consecutive naturals, for example, 47991 + ... + 48129.

It is an arithmetic number, because the mean of its divisors is an integer number (220500).

Almost surely, 2^6680340 is an apocalyptic number.

6680340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6680340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10584000).

6680340 is an abundant number, since it is smaller than the sum of its proper divisors (14487660).

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

6680340 is a wasteful number, since it uses less digits than its factorization.

6680340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6680340 is about 2584.6353708018. The cubic root of 6680340 is about 188.3357889013.

The spelling of 6680340 in words is "six million, six hundred eighty thousand, three hundred forty".