6680720 has 60 divisors (see below), whose sum is σ = 16225524. Its totient is φ = 2557440.

The previous prime is 6680699. The next prime is 6680731. The reversal of 6680720 is 270866.

It can be written as a sum of positive squares in 6 ways, for example, as 44944 + 6635776 = 212^2 + 2576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109490 + ... + 109550.

Almost surely, 2^6680720 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 6680720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8112762).

6680720 is an abundant number, since it is smaller than the sum of its proper divisors (9544804).

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

6680720 is a wasteful number, since it uses less digits than its factorization.

6680720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6680720 is about 2584.7088810928. The cubic root of 6680720 is about 188.3393598893.

The spelling of 6680720 in words is "six million, six hundred eighty thousand, seven hundred twenty".