604613861 has 2 divisors, whose sum is σ = 604613862. Its totient is φ = 604613860.

The previous prime is 604613851. The next prime is 604613899. The reversal of 604613861 is 168316406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318801025 + 285812836 = 17855^2 + 16906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604613861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604613851) 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, 302306930 + 302306931.

It is an arithmetic number, because the mean of its divisors is an integer number (302306931).

Almost surely, 2^604613861 is an apocalyptic number.

It is an amenable number.

604613861 is a deficient number, since it is larger than the sum of its proper divisors (1).

604613861 is an equidigital number, since it uses as much as digits as its factorization.

604613861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 604613861 is about 24588.8971082479. The cubic root of 604613861 is about 845.5890811985.

The spelling of 604613861 in words is "six hundred four million, six hundred thirteen thousand, eight hundred sixty-one".