604623421 has 2 divisors, whose sum is σ = 604623422. Its totient is φ = 604623420.

The previous prime is 604623413. The next prime is 604623427. The reversal of 604623421 is 124326406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412496100 + 192127321 = 20310^2 + 13861^2 .

It is a cyclic number.

It is not a de Polignac number, because 604623421 - 2³ = 604623413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 604623421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604623427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302311710 + 302311711.

It is an arithmetic number, because the mean of its divisors is an integer number (302311711).

Almost surely, 2^604623421 is an apocalyptic number.

It is an amenable number.

604623421 is a deficient number, since it is larger than the sum of its proper divisors (1).

604623421 is an equidigital number, since it uses as much as digits as its factorization.

604623421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 604623421 is about 24589.0915041609. The cubic root of 604623421 is about 845.5935379213.

Adding to 604623421 its reverse (124326406), we get a palindrome (728949827).

The spelling of 604623421 in words is "six hundred four million, six hundred twenty-three thousand, four hundred twenty-one".