605506513 has 2 divisors, whose sum is σ = 605506514. Its totient is φ = 605506512.

The previous prime is 605506511. The next prime is 605506519. The reversal of 605506513 is 315605506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448931344 + 156575169 = 21188^2 + 12513^2 .

It is a cyclic number.

It is not a de Polignac number, because 605506513 - 2¹ = 605506511 is a prime.

Together with 605506511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (605506511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302753256 + 302753257.

It is an arithmetic number, because the mean of its divisors is an integer number (302753257).

Almost surely, 2^605506513 is an apocalyptic number.

It is an amenable number.

605506513 is a deficient number, since it is larger than the sum of its proper divisors (1).

605506513 is an equidigital number, since it uses as much as digits as its factorization.

605506513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 605506513 is about 24607.0419392498. The cubic root of 605506513 is about 846.0050191864.

The spelling of 605506513 in words is "six hundred five million, five hundred six thousand, five hundred thirteen".