564404 has 6 divisors (see below), whose sum is σ = 987714. Its totient is φ = 282200.

The previous prime is 564401. The next prime is 564407. The reversal of 564404 is 404465.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (564401) and next prime (564407).

It can be written as a sum of positive squares in only one way, i.e., 559504 + 4900 = 748^2 + 70^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 564404.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 564404.

It is not an unprimeable number, because it can be changed into a prime (564401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70547 + ... + 70554.

It is an arithmetic number, because the mean of its divisors is an integer number (164619).

2⁵⁶⁴⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

564404 is a deficient number, since it is larger than the sum of its proper divisors (423310).

564404 is a wasteful number, since it uses less digits than its factorization.

564404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141105 (or 141103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 564404 is about 751.2682610093. The cubic root of 564404 is about 82.6412151385.

Adding to 564404 its reverse (404465), we get a palindrome (968869).

The spelling of 564404 in words is "five hundred sixty-four thousand, four hundred four".