423604 has 12 divisors (see below), whose sum is σ = 747684. Its totient is φ = 209984.

The previous prime is 423601. The next prime is 423617. The reversal of 423604 is 406324.

It can be written as a sum of positive squares in 2 ways, for example, as 121104 + 302500 = 348^2 + 550^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423601) 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, 162 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (62307).

2⁴²³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

423604 is a deficient number, since it is larger than the sum of its proper divisors (324080).

423604 is a wasteful number, since it uses less digits than its factorization.

423604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 423604 is about 650.8486767291. The cubic root of 423604 is about 75.1023196051.

Adding to 423604 its reverse (406324), we get a palindrome (829928).

The spelling of 423604 in words is "four hundred twenty-three thousand, six hundred four".