604645 has 4 divisors (see below), whose sum is σ = 725580. Its totient is φ = 483712.

The previous prime is 604619. The next prime is 604649. The reversal of 604645 is 546406.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 236196 = 607^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 604645 - 2⁵ = 604613 is a prime.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60460 + ... + 60469.

It is an arithmetic number, because the mean of its divisors is an integer number (181395).

2⁶⁰⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

604645 is a deficient number, since it is larger than the sum of its proper divisors (120935).

604645 is a wasteful number, since it uses less digits than its factorization.

604645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120934.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 604645 is about 777.5892231764. The cubic root of 604645 is about 84.5603597541.

The spelling of 604645 in words is "six hundred four thousand, six hundred forty-five".