1804604 has 12 divisors (see below), whose sum is σ = 3187800. Its totient is φ = 893808.

The previous prime is 1804577. The next prime is 1804609. The reversal of 1804604 is 4064081.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1804604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804609) 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 in 3 ways as a sum of consecutive naturals, for example, 1634 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (265650).

2^1804604 is an apocalyptic number.

It is an amenable number.

1804604 is a deficient number, since it is larger than the sum of its proper divisors (1383196).

1804604 is a wasteful number, since it uses less digits than its factorization.

1804604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4250 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1804604 is about 1343.3555002307. The cubic root of 1804604 is about 121.7476644195.

Adding to 1804604 its reverse (4064081), we get a palindrome (5868685).

The spelling of 1804604 in words is "one million, eight hundred four thousand, six hundred four".