604456661 has 2 divisors, whose sum is σ = 604456662. Its totient is φ = 604456660.

The previous prime is 604456621. The next prime is 604456673. The reversal of 604456661 is 166654406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 446476900 + 157979761 = 21130^2 + 12569^2 .

It is a cyclic number.

It is not a de Polignac number, because 604456661 - 2¹⁰ = 604455637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604456621) 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, 302228330 + 302228331.

It is an arithmetic number, because the mean of its divisors is an integer number (302228331).

Almost surely, 2^604456661 is an apocalyptic number.

It is an amenable number.

604456661 is a deficient number, since it is larger than the sum of its proper divisors (1).

604456661 is an equidigital number, since it uses as much as digits as its factorization.

604456661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 604456661 is about 24585.7003357643. The cubic root of 604456661 is about 845.5157902746.

The spelling of 604456661 in words is "six hundred four million, four hundred fifty-six thousand, six hundred sixty-one".