605420549 has 2 divisors, whose sum is σ = 605420550. Its totient is φ = 605420548.

The previous prime is 605420527. The next prime is 605420551. The reversal of 605420549 is 945024506.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457189924 + 148230625 = 21382^2 + 12175^2 .

It is a cyclic number.

It is not a de Polignac number, because 605420549 - 2⁸ = 605420293 is a prime.

It is a super-2 number, since 2×605420549² = 733068082302922802, which contains 22 as substring.

Together with 605420551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601420549) 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, 302710274 + 302710275.

It is an arithmetic number, because the mean of its divisors is an integer number (302710275).

Almost surely, 2^605420549 is an apocalyptic number.

It is an amenable number.

605420549 is a deficient number, since it is larger than the sum of its proper divisors (1).

605420549 is an equidigital number, since it uses as much as digits as its factorization.

605420549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 605420549 is about 24605.2951414934. The cubic root of 605420549 is about 845.9649814022.

The spelling of 605420549 in words is "six hundred five million, four hundred twenty thousand, five hundred forty-nine".