6805240 has 64 divisors (see below), whose sum is σ = 17236800. Its totient is φ = 2399232.

The previous prime is 6805181. The next prime is 6805243. The reversal of 6805240 is 425086.

It is a super-2 number, since 2×6805240² = 92622582915200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6805243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11676 + ... + 12244.

It is an arithmetic number, because the mean of its divisors is an integer number (269325).

Almost surely, 2^6805240 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 6805240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8618400).

6805240 is an abundant number, since it is smaller than the sum of its proper divisors (10431560).

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

6805240 is a wasteful number, since it uses less digits than its factorization.

6805240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 6805240 is about 2608.6854927338. The cubic root of 6805240 is about 189.5022985266.

The spelling of 6805240 in words is "six million, eight hundred five thousand, two hundred forty".