605261 has 2 divisors, whose sum is σ = 605262. Its totient is φ = 605260.

The previous prime is 605257. The next prime is 605309. The reversal of 605261 is 162506.

605261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 72361 = 730^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 605261 - 2² = 605257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302630 + 302631.

It is an arithmetic number, because the mean of its divisors is an integer number (302631).

2⁶⁰⁵²⁶¹ is an apocalyptic number.

It is an amenable number.

605261 is a deficient number, since it is larger than the sum of its proper divisors (1).

605261 is an equidigital number, since it uses as much as digits as its factorization.

605261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 605261 is about 777.9852183686. The cubic root of 605261 is about 84.5890661314.

Adding to 605261 its reverse (162506), we get a palindrome (767767).

The spelling of 605261 in words is "six hundred five thousand, two hundred sixty-one".