604890 has 96 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 132480.

The previous prime is 604883. The next prime is 604907. The reversal of 604890 is 98406.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 604890.

It is an unprimeable number.

604890 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 47 ways as a sum of consecutive naturals, for example, 12847 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2⁶⁰⁴⁸⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 604890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943488).

604890 is an abundant number, since it is smaller than the sum of its proper divisors (1282086).

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

604890 is a wasteful number, since it uses less digits than its factorization.

604890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 81 counting only the distinct ones).

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

The square root of 604890 is about 777.7467454127. The cubic root of 604890 is about 84.5717793974.

It can be divided in two parts, 60 and 4890, that added together give a triangular number (4950 = T₉₉).

The spelling of 604890 in words is "six hundred four thousand, eight hundred ninety".