604209 has 4 divisors (see below), whose sum is σ = 805616. Its totient is φ = 402804.

The previous prime is 604189. The next prime is 604223. The reversal of 604209 is 902406.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-604209 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100699 + ... + 100704.

It is an arithmetic number, because the mean of its divisors is an integer number (201404).

2⁶⁰⁴²⁰⁹ is an apocalyptic number.

It is an amenable number.

604209 is a deficient number, since it is larger than the sum of its proper divisors (201407).

604209 is a wasteful number, since it uses less digits than its factorization.

604209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201406.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 604209 is about 777.3088189388. The cubic root of 604209 is about 84.5400298183.

The spelling of 604209 in words is "six hundred four thousand, two hundred nine".