604634221 has 4 divisors (see below), whose sum is σ = 604866492. Its totient is φ = 604401952.

The previous prime is 604634213. The next prime is 604634243. The reversal of 604634221 is 122436406.

604634221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 408242025 + 196392196 = 20205^2 + 14014^2 .

It is a cyclic number.

It is not a de Polignac number, because 604634221 - 2³ = 604634213 is a prime.

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 604634221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604634201) 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, 112186 + ... + 117451.

It is an arithmetic number, because the mean of its divisors is an integer number (151216623).

Almost surely, 2^604634221 is an apocalyptic number.

It is an amenable number.

604634221 is a deficient number, since it is larger than the sum of its proper divisors (232271).

604634221 is a wasteful number, since it uses less digits than its factorization.

604634221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232270.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 604634221 is about 24589.3111127579. The cubic root of 604634221 is about 845.5985726561.

The spelling of 604634221 in words is "six hundred four million, six hundred thirty-four thousand, two hundred twenty-one".