2006603 has 2 divisors, whose sum is σ = 2006604. Its totient is φ = 2006602.

The previous prime is 2006579. The next prime is 2006611. The reversal of 2006603 is 3066002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2006603 - 2¹⁰ = 2005579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2006623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003301 + 1003302.

It is an arithmetic number, because the mean of its divisors is an integer number (1003302).

2^2006603 is an apocalyptic number.

2006603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006603 is an equidigital number, since it uses as much as digits as its factorization.

2006603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2006603 is about 1416.5461517367. The cubic root of 2006603 is about 126.1306069912.

The spelling of 2006603 in words is "two million, six thousand, six hundred three".