6722660 has 48 divisors (see below), whose sum is σ = 16665600. Its totient is φ = 2229120.

The previous prime is 6722659. The next prime is 6722669. The reversal of 6722660 is 662276.

It is not an unprimeable number, because it can be changed into a prime (6722669) 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, 3566 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (347200).

Almost surely, 2^6722660 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 6722660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8332800).

6722660 is an abundant number, since it is smaller than the sum of its proper divisors (9942940).

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

6722660 is a wasteful number, since it uses less digits than its factorization.

6722660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 6722660 is about 2592.8092872404. The cubic root of 6722660 is about 188.7326548686.

The spelling of 6722660 in words is "six million, seven hundred twenty-two thousand, six hundred sixty".