604640 has 24 divisors (see below), whose sum is σ = 1428840. Its totient is φ = 241792.

The previous prime is 604619. The next prime is 604649. The reversal of 604640 is 46406.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604649) 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, 1730 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (59535).

2⁶⁰⁴⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

604640 is an abundant number, since it is smaller than the sum of its proper divisors (824200).

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

604640 is a wasteful number, since it uses less digits than its factorization.

604640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794 (or 3786 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 604640 is about 777.5860081046. The cubic root of 604640 is about 84.5601266681.

The spelling of 604640 in words is "six hundred four thousand, six hundred forty".