6418720 has 96 divisors (see below), whose sum is σ = 18942336. Its totient is φ = 1996800.

The previous prime is 6418717. The next prime is 6418721. The reversal of 6418720 is 278146.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (6418721) 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, 12060 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (197316).

Almost surely, 2^6418720 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 6418720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9471168).

6418720 is an abundant number, since it is smaller than the sum of its proper divisors (12523616).

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

6418720 is a wasteful number, since it uses less digits than its factorization.

6418720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 6418720 is about 2533.5192914205. The cubic root of 6418720 is about 185.8443990989.

The spelling of 6418720 in words is "six million, four hundred eighteen thousand, seven hundred twenty".