6611720 has 16 divisors (see below), whose sum is σ = 14876460. Its totient is φ = 2644672.

The previous prime is 6611707. The next prime is 6611777. The reversal of 6611720 is 271166.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 88804 = 2554^2 + 298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82607 + ... + 82686.

Almost surely, 2^6611720 is an apocalyptic number.

It is an amenable number.

6611720 is an abundant number, since it is smaller than the sum of its proper divisors (8264740).

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

6611720 is a wasteful number, since it uses less digits than its factorization.

6611720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165304 (or 165300 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 6611720 is about 2571.3265059109. The cubic root of 6611720 is about 187.6887107477.

Adding to 6611720 its reverse (271166), we get a palindrome (6882886).

The spelling of 6611720 in words is "six million, six hundred eleven thousand, seven hundred twenty".