6611660 has 48 divisors (see below), whose sum is σ = 15537312. Its totient is φ = 2342400.

The previous prime is 6611659. The next prime is 6611663. The reversal of 6611660 is 661166.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6611663) 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 15 ways as a sum of consecutive naturals, for example, 8654 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (323694).

Almost surely, 2^6611660 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 6611660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7768656).

6611660 is an abundant number, since it is smaller than the sum of its proper divisors (8925652).

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

6611660 is a wasteful number, since it uses less digits than its factorization.

6611660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6611660 is about 2571.3148387547. The cubic root of 6611660 is about 187.6881430005.

The spelling of 6611660 in words is "six million, six hundred eleven thousand, six hundred sixty".