1604323 has 4 divisors (see below), whose sum is σ = 1833520. Its totient is φ = 1375128.

The previous prime is 1604311. The next prime is 1604329. The reversal of 1604323 is 3234061.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604323 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁵ + 0 + 4 + 3⁷ + 2⁵ + 3¹³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1604323.

It is not an unprimeable number, because it can be changed into a prime (1604329) 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, 114588 + ... + 114601.

It is an arithmetic number, because the mean of its divisors is an integer number (458380).

2^1604323 is an apocalyptic number.

1604323 is a deficient number, since it is larger than the sum of its proper divisors (229197).

1604323 is an equidigital number, since it uses as much as digits as its factorization.

1604323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229196.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1604323 is about 1266.6187271630. The cubic root of 1604323 is about 117.0659525399.

Adding to 1604323 its reverse (3234061), we get a palindrome (4838384).

The spelling of 1604323 in words is "one million, six hundred four thousand, three hundred twenty-three".