505638713 has 2 divisors, whose sum is σ = 505638714. Its totient is φ = 505638712.

The previous prime is 505638629. The next prime is 505638761. The reversal of 505638713 is 317836505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309302569 + 196336144 = 17587^2 + 14012^2 .

It is a cyclic number.

It is not a de Polignac number, because 505638713 - 2¹⁰ = 505637689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505628713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252819356 + 252819357.

It is an arithmetic number, because the mean of its divisors is an integer number (252819357).

Almost surely, 2^505638713 is an apocalyptic number.

It is an amenable number.

505638713 is a deficient number, since it is larger than the sum of its proper divisors (1).

505638713 is an equidigital number, since it uses as much as digits as its factorization.

505638713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 505638713 is about 22486.4117413161. The cubic root of 505638713 is about 796.6730128130.

The spelling of 505638713 in words is "five hundred five million, six hundred thirty-eight thousand, seven hundred thirteen".