604204221 has 16 divisors (see below), whose sum is σ = 809759808. Its totient is φ = 400732800.

The previous prime is 604204217. The next prime is 604204231. The reversal of 604204221 is 122402406.

It is not a de Polignac number, because 604204221 - 2² = 604204217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604204201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892135 + ... + 892811.

It is an arithmetic number, because the mean of its divisors is an integer number (50609988).

Almost surely, 2^604204221 is an apocalyptic number.

It is an amenable number.

604204221 is a deficient number, since it is larger than the sum of its proper divisors (205555587).

604204221 is a wasteful number, since it uses less digits than its factorization.

604204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 604204221 is about 24580.5659210686. The cubic root of 604204221 is about 845.3980692753.

Adding to 604204221 its reverse (122402406), we get a palindrome (726606627).

The spelling of 604204221 in words is "six hundred four million, two hundred four thousand, two hundred twenty-one".