2003604 has 12 divisors (see below), whose sum is σ = 4675104. Its totient is φ = 667864.

The previous prime is 2003597. The next prime is 2003611. The reversal of 2003604 is 4063002.

It is an interprime number because it is at equal distance from previous prime (2003597) and next prime (2003611).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83472 + ... + 83495.

It is an arithmetic number, because the mean of its divisors is an integer number (389592).

2^2003604 is an apocalyptic number.

It is an amenable number.

2003604 is an abundant number, since it is smaller than the sum of its proper divisors (2671500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2003604 is a wasteful number, since it uses less digits than its factorization.

2003604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166974 (or 166972 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2003604 is about 1415.4871952794. The cubic root of 2003604 is about 126.0677388347.

Adding to 2003604 its reverse (4063002), we get a palindrome (6066606).

The spelling of 2003604 in words is "two million, three thousand, six hundred four".