6378720 has 96 divisors (see below), whose sum is σ = 20448288. Its totient is φ = 1671168.

The previous prime is 6378703. The next prime is 6378721. The reversal of 6378720 is 278736.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378721) 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, 46492 + ... + 46628.

It is an arithmetic number, because the mean of its divisors is an integer number (213003).

Almost surely, 2^6378720 is an apocalyptic number.

6378720 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 6378720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10224144).

6378720 is an abundant number, since it is smaller than the sum of its proper divisors (14069568).

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

6378720 is a wasteful number, since it uses less digits than its factorization.

6378720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 6378720 is about 2525.6127969267. The cubic root of 6378720 is about 185.4575477477.

The spelling of 6378720 in words is "six million, three hundred seventy-eight thousand, seven hundred twenty".