604623553 has 4 divisors (see below), whose sum is σ = 605267028. Its totient is φ = 603980080.

The previous prime is 604623541. The next prime is 604623571. The reversal of 604623553 is 355326406.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355326406 = 2 ⋅177663203.

It can be written as a sum of positive squares in 2 ways, for example, as 425679424 + 178944129 = 20632^2 + 13377^2 .

It is a cyclic number.

It is not a de Polignac number, because 604623553 - 2¹⁷ = 604492481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604623053) 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, 320326 + ... + 322207.

It is an arithmetic number, because the mean of its divisors is an integer number (151316757).

Almost surely, 2^604623553 is an apocalyptic number.

It is an amenable number.

604623553 is a deficient number, since it is larger than the sum of its proper divisors (643475).

604623553 is an equidigital number, since it uses as much as digits as its factorization.

604623553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643474.

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 604623553 is about 24589.0941882779. The cubic root of 604623553 is about 845.5935994573.

Adding to 604623553 its reverse (355326406), we get a palindrome (959949959).

The spelling of 604623553 in words is "six hundred four million, six hundred twenty-three thousand, five hundred fifty-three".