604405 has 8 divisors (see below), whose sum is σ = 732600. Its totient is φ = 478656.

The previous prime is 604397. The next prime is 604411. The reversal of 604405 is 504406.

604405 = T₄₆ + T₄₇ + ... + T₁₅₄.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 599076 = 73^2 + 774^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 604405 - 2³ = 604397 is a prime.

604405 is a lucky number.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 10 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (91575).

2⁶⁰⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

604405 is a deficient number, since it is larger than the sum of its proper divisors (128195).

604405 is a wasteful number, since it uses less digits than its factorization.

604405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 604405 is about 777.4348847331. The cubic root of 604405 is about 84.5491701734.

Subtracting from 604405 its reverse (504406), we obtain a palindrome (99999).

It can be divided in two parts, 60 and 4405, that added together give a triangular number (4465 = T₉₄).

The spelling of 604405 in words is "six hundred four thousand, four hundred five".