605861257 has 2 divisors, whose sum is σ = 605861258. Its totient is φ = 605861256.

The previous prime is 605861251. The next prime is 605861261. The reversal of 605861257 is 752168506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590052681 + 15808576 = 24291^2 + 3976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605861257 is a prime.

It is not a weakly prime, because it can be changed into another prime (605861251) 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, 302930628 + 302930629.

It is an arithmetic number, because the mean of its divisors is an integer number (302930629).

Almost surely, 2^605861257 is an apocalyptic number.

It is an amenable number.

605861257 is a deficient number, since it is larger than the sum of its proper divisors (1).

605861257 is an equidigital number, since it uses as much as digits as its factorization.

605861257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 605861257 is about 24614.2490643123. The cubic root of 605861257 is about 846.1702013429.

The spelling of 605861257 in words is "six hundred five million, eight hundred sixty-one thousand, two hundred fifty-seven".