604456621 has 2 divisors, whose sum is σ = 604456622. Its totient is φ = 604456620.

The previous prime is 604456591. The next prime is 604456661. The reversal of 604456621 is 126654406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591170596 + 13286025 = 24314^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 604456621 - 2¹⁷ = 604325549 is a prime.

It is a super-5 number, since 5×604456621⁵ (a number of 45 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604456661) 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, 302228310 + 302228311.

It is an arithmetic number, because the mean of its divisors is an integer number (302228311).

Almost surely, 2^604456621 is an apocalyptic number.

It is an amenable number.

604456621 is a deficient number, since it is larger than the sum of its proper divisors (1).

604456621 is an equidigital number, since it uses as much as digits as its factorization.

604456621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 604456621 is about 24585.6995222833. The cubic root of 604456621 is about 845.5157716239.

The spelling of 604456621 in words is "six hundred four million, four hundred fifty-six thousand, six hundred twenty-one".