2005604 has 6 divisors (see below), whose sum is σ = 3509814. Its totient is φ = 1002800.

The previous prime is 2005579. The next prime is 2005613. The reversal of 2005604 is 4065002.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 40000 = 1402^2 + 200^2 .

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 as a sum of consecutive naturals, namely, 250697 + ... + 250704.

It is an arithmetic number, because the mean of its divisors is an integer number (584969).

2^2005604 is an apocalyptic number.

It is an amenable number.

2005604 is a deficient number, since it is larger than the sum of its proper divisors (1504210).

2005604 is a wasteful number, since it uses less digits than its factorization.

2005604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501405 (or 501403 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2005604 is about 1416.1934896051. The cubic root of 2005604 is about 126.1096718764.

The spelling of 2005604 in words is "two million, five thousand, six hundred four".