604224421 has 16 divisors (see below), whose sum is σ = 683883648. Its totient is φ = 530675200.

The previous prime is 604224419. The next prime is 604224427. The reversal of 604224421 is 124422406.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 604224421 - 2¹ = 604224419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604224427) 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, 2815 + ... + 34876.

It is an arithmetic number, because the mean of its divisors is an integer number (42742728).

Almost surely, 2^604224421 is an apocalyptic number.

It is an amenable number.

604224421 is a deficient number, since it is larger than the sum of its proper divisors (79659227).

604224421 is a wasteful number, since it uses less digits than its factorization.

604224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37772.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 604224421 is about 24580.9768113474. The cubic root of 604224421 is about 845.4074904005.

Adding to 604224421 its reverse (124422406), we get a palindrome (728646827).

The spelling of 604224421 in words is "six hundred four million, two hundred twenty-four thousand, four hundred twenty-one".