6718720 has 72 divisors (see below), whose sum is σ = 16740360. Its totient is φ = 2580480.

The previous prime is 6718687. The next prime is 6718721. The reversal of 6718720 is 278176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 6718464 = 16^2 + 2592^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6718721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37030 + ... + 37210.

It is an arithmetic number, because the mean of its divisors is an integer number (232505).

Almost surely, 2^6718720 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 6718720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8370180).

6718720 is an abundant number, since it is smaller than the sum of its proper divisors (10021640).

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

6718720 is a wasteful number, since it uses less digits than its factorization.

6718720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 6718720 is about 2592.0493822456. The cubic root of 6718720 is about 188.6957770068.

The spelling of 6718720 in words is "six million, seven hundred eighteen thousand, seven hundred twenty".