6606 has 12 divisors (see below), whose sum is σ = 14352. Its totient is φ = 2196.

The previous prime is 6599. The next prime is 6607. The reversal of 6606 is 6066.

6606 is a `hidden beast` number, since 660 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 367 = 6606 / (6 + 6 + 0 + 6).

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6607) by changing a digit.

6606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166 + ... + 201.

It is an arithmetic number, because the mean of its divisors is an integer number (1196).

6606 is an abundant number, since it is smaller than the sum of its proper divisors (7746).

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

6606 is a wasteful number, since it uses less digits than its factorization.

6606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 6606 is about 81.2773031049. The cubic root of 6606 is about 18.7634570062.

It can be divided in two parts, 660 and 6, that added together give a palindrome (666).

The spelling of 6606 in words is "six thousand, six hundred six".