2645603 has 2 divisors, whose sum is σ = 2645604. Its totient is φ = 2645602.

The previous prime is 2645597. The next prime is 2645639. The reversal of 2645603 is 3065462.

2645603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2645603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2645663) 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 as a sum of consecutive naturals, namely, 1322801 + 1322802.

It is an arithmetic number, because the mean of its divisors is an integer number (1322802).

2^2645603 is an apocalyptic number.

2645603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645603 is an equidigital number, since it uses as much as digits as its factorization.

2645603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 2645603 is about 1626.5309711161. The cubic root of 2645603 is about 138.3061710189.

The spelling of 2645603 in words is "two million, six hundred forty-five thousand, six hundred three".