605617 has 2 divisors, whose sum is σ = 605618. Its totient is φ = 605616.

The previous prime is 605609. The next prime is 605629. The reversal of 605617 is 716506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564001 + 41616 = 751^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 605617 - 2³ = 605609 is a prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 605591 and 605600.

It is not a weakly prime, because it can be changed into another prime (605687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302808 + 302809.

It is an arithmetic number, because the mean of its divisors is an integer number (302809).

2⁶⁰⁵⁶¹⁷ is an apocalyptic number.

It is an amenable number.

605617 is a deficient number, since it is larger than the sum of its proper divisors (1).

605617 is an equidigital number, since it uses as much as digits as its factorization.

605617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 605617 is about 778.2139808562. The cubic root of 605617 is about 84.6056473008.

Subtracting 605617 from its reverse (716506), we obtain a square (110889 = 333²).

The spelling of 605617 in words is "six hundred five thousand, six hundred seventeen".