6605603 has 4 divisors (see below), whose sum is σ = 6673800. Its totient is φ = 6537408.

The previous prime is 6605593. The next prime is 6605653. The reversal of 6605603 is 3065066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6605603 - 2⁴ = 6605587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6605653) 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 3 ways as a sum of consecutive naturals, for example, 33953 + ... + 34146.

It is an arithmetic number, because the mean of its divisors is an integer number (1668450).

Almost surely, 2^6605603 is an apocalyptic number.

6605603 is a deficient number, since it is larger than the sum of its proper divisors (68197).

6605603 is an equidigital number, since it uses as much as digits as its factorization.

6605603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68196.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 6605603 is about 2570.1367667889. The cubic root of 6605603 is about 187.6308112355.

The spelling of 6605603 in words is "six million, six hundred five thousand, six hundred three".