2303605 has 4 divisors (see below), whose sum is σ = 2764332. Its totient is φ = 1842880.

The previous prime is 2303599. The next prime is 2303621. The reversal of 2303605 is 5063032.

2303605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 877969 = 1194^2 + 937^2 .

It is not a de Polignac number, because 2303605 - 2³ = 2303597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 230356 + ... + 230365.

It is an arithmetic number, because the mean of its divisors is an integer number (691083).

2^2303605 is an apocalyptic number.

It is an amenable number.

2303605 is a deficient number, since it is larger than the sum of its proper divisors (460727).

2303605 is an equidigital number, since it uses as much as digits as its factorization.

2303605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460726.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 2303605 is about 1517.7631567540. The cubic root of 2303605 is about 132.0695417162.

Adding to 2303605 its reverse (5063032), we get a palindrome (7366637).

The spelling of 2303605 in words is "two million, three hundred three thousand, six hundred five".