6605611 has 4 divisors (see below), whose sum is σ = 6612424. Its totient is φ = 6598800.

The previous prime is 6605593. The next prime is 6605653. The reversal of 6605611 is 1165066.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6605611 - 2⁵ = 6605579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6605311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650 + ... + 3991.

It is an arithmetic number, because the mean of its divisors is an integer number (1653106).

Almost surely, 2^6605611 is an apocalyptic number.

6605611 is a deficient number, since it is larger than the sum of its proper divisors (6813).

6605611 is a wasteful number, since it uses less digits than its factorization.

6605611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 6605611 is about 2570.1383231258. The cubic root of 6605611 is about 187.6308869816.

The spelling of 6605611 in words is "six million, six hundred five thousand, six hundred eleven".