604009 has 4 divisors (see below), whose sum is σ = 690304. Its totient is φ = 517716.

The previous prime is 604007. The next prime is 604013. The reversal of 604009 is 900406.

It is a happy number.

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 cyclic number.

It is not a de Polignac number, because 604009 - 2¹ = 604007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604001) 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, 43137 + ... + 43150.

It is an arithmetic number, because the mean of its divisors is an integer number (172576).

2⁶⁰⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

604009 is a deficient number, since it is larger than the sum of its proper divisors (86295).

604009 is an equidigital number, since it uses as much as digits as its factorization.

604009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86294.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 604009 is about 777.1801592938. The cubic root of 604009 is about 84.5307008875.

The spelling of 604009 in words is "six hundred four thousand, nine".