205070717 has 2 divisors, whose sum is σ = 205070718. Its totient is φ = 205070716.

The previous prime is 205070699. The next prime is 205070777. The reversal of 205070717 is 717070502.

205070717 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., 134073241 + 70997476 = 11579^2 + 8426^2 .

It is a cyclic number.

It is not a de Polignac number, because 205070717 - 2¹² = 205066621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205070717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205070777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102535358 + 102535359.

It is an arithmetic number, because the mean of its divisors is an integer number (102535359).

Almost surely, 2^205070717 is an apocalyptic number.

It is an amenable number.

205070717 is a deficient number, since it is larger than the sum of its proper divisors (1).

205070717 is an equidigital number, since it uses as much as digits as its factorization.

205070717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 205070717 is about 14320.2903951002. The cubic root of 205070717 is about 589.7046467705.

The spelling of 205070717 in words is "two hundred five million, seventy thousand, seven hundred seventeen".