6685340 has 48 divisors (see below), whose sum is σ = 15042720. Its totient is φ = 2488320.

The previous prime is 6685331. The next prime is 6685351. The reversal of 6685340 is 435866.

It is a junction number, because it is equal to n+sod(n) for n = 6685297 and 6685306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27620 + ... + 27860.

It is an arithmetic number, because the mean of its divisors is an integer number (313390).

Almost surely, 2^6685340 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 6685340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7521360).

6685340 is an abundant number, since it is smaller than the sum of its proper divisors (8357380).

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

6685340 is a wasteful number, since it uses less digits than its factorization.

6685340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6685340 is about 2585.6024443058. The cubic root of 6685340 is about 188.3827647590.

The spelling of 6685340 in words is "six million, six hundred eighty-five thousand, three hundred forty".