604440 has 96 divisors (see below), whose sum is σ = 2077920. Its totient is φ = 152064.

The previous prime is 604433. The next prime is 604441. The reversal of 604440 is 44406.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604441) by changing a digit.

604440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8244 + ... + 8316.

It is an arithmetic number, because the mean of its divisors is an integer number (21645).

2⁶⁰⁴⁴⁴⁰ is an apocalyptic number.

604440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 604440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038960).

604440 is an abundant number, since it is smaller than the sum of its proper divisors (1473480).

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

604440 is a wasteful number, since it uses less digits than its factorization.

604440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 604440 is about 777.4573943310. The cubic root of 604440 is about 84.5508021718.

Adding to 604440 its reverse (44406), we get a palindrome (648846).

It can be divided in two parts, 6044 and 40, that added together give a square (6084 = 78²).

The spelling of 604440 in words is "six hundred four thousand, four hundred forty".