609804 has 36 divisors (see below), whose sum is σ = 1661296. Its totient is φ = 187488.

The previous prime is 609803. The next prime is 609809. The reversal of 609804 is 408906.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (609803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184 + ... + 1119.

2⁶⁰⁹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

609804 is an abundant number, since it is smaller than the sum of its proper divisors (1051492).

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

609804 is a wasteful number, since it uses less digits than its factorization.

609804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 609804 is about 780.8994813675. The cubic root of 609804 is about 84.8001765156.

The spelling of 609804 in words is "six hundred nine thousand, eight hundred four".