6807720 has 32 divisors (see below), whose sum is σ = 20423520. Its totient is φ = 1815360.

The previous prime is 6807709. The next prime is 6807727. The reversal of 6807720 is 277086.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (6807727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28246 + ... + 28485.

It is an arithmetic number, because the mean of its divisors is an integer number (638235).

Almost surely, 2^6807720 is an apocalyptic number.

6807720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6807720 is an abundant number, since it is smaller than the sum of its proper divisors (13615800).

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

6807720 is a wasteful number, since it uses less digits than its factorization.

6807720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56745 (or 56741 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 6807720 is about 2609.1607846202. The cubic root of 6807720 is about 189.5253155264.

The spelling of 6807720 in words is "six million, eight hundred seven thousand, seven hundred twenty".