604491 has 4 divisors (see below), whose sum is σ = 805992. Its totient is φ = 402992.

The previous prime is 604481. The next prime is 604517. The reversal of 604491 is 194406.

604491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 604491 - 2⁶ = 604427 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (604411) 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, 100746 + ... + 100751.

It is an arithmetic number, because the mean of its divisors is an integer number (201498).

2⁶⁰⁴⁴⁹¹ is an apocalyptic number.

604491 is a deficient number, since it is larger than the sum of its proper divisors (201501).

604491 is a wasteful number, since it uses less digits than its factorization.

604491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201500.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 604491 is about 777.4901928642. The cubic root of 604491 is about 84.5531801137.

Adding to 604491 its reverse (194406), we get a palindrome (798897).

The spelling of 604491 in words is "six hundred four thousand, four hundred ninety-one".