604423561 has 4 divisors (see below), whose sum is σ = 690769792. Its totient is φ = 518077332.

The previous prime is 604423531. The next prime is 604423579. The reversal of 604423561 is 165324406.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 604423561 - 2¹³ = 604415369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604423531) 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, 43173105 + ... + 43173118.

It is an arithmetic number, because the mean of its divisors is an integer number (172692448).

Almost surely, 2^604423561 is an apocalyptic number.

It is an amenable number.

604423561 is a deficient number, since it is larger than the sum of its proper divisors (86346231).

604423561 is an equidigital number, since it uses as much as digits as its factorization.

604423561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86346230.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 604423561 is about 24585.0271710242. The cubic root of 604423561 is about 845.5003565331.

Adding to 604423561 its reverse (165324406), we get a palindrome (769747967).

The spelling of 604423561 in words is "six hundred four million, four hundred twenty-three thousand, five hundred sixty-one".