2604403 has 8 divisors (see below), whose sum is σ = 2782080. Its totient is φ = 2432640.

The previous prime is 2604401. The next prime is 2604431. The reversal of 2604403 is 3044062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2604403 - 2¹ = 2604401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (347760).

2^2604403 is an apocalyptic number.

2604403 is a deficient number, since it is larger than the sum of its proper divisors (177677).

2604403 is a wasteful number, since it uses less digits than its factorization.

2604403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2604403 is about 1613.8162844636. The cubic root of 2604403 is about 137.5844638072.

Adding to 2604403 its reverse (3044062), we get a palindrome (5648465).

The spelling of 2604403 in words is "two million, six hundred four thousand, four hundred three".