205702073 has 2 divisors, whose sum is σ = 205702074. Its totient is φ = 205702072.

The previous prime is 205702039. The next prime is 205702093. The reversal of 205702073 is 370207502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178275904 + 27426169 = 13352^2 + 5237^2 .

It is a cyclic number.

It is not a de Polignac number, because 205702073 - 2⁶ = 205702009 is a prime.

It is not a weakly prime, because it can be changed into another prime (205702093) 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, 102851036 + 102851037.

It is an arithmetic number, because the mean of its divisors is an integer number (102851037).

Almost surely, 2^205702073 is an apocalyptic number.

It is an amenable number.

205702073 is a deficient number, since it is larger than the sum of its proper divisors (1).

205702073 is an equidigital number, since it uses as much as digits as its factorization.

205702073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 205702073 is about 14342.3175602829. The cubic root of 205702073 is about 590.3092059214.

Adding to 205702073 its reverse (370207502), we get a palindrome (575909575).

The spelling of 205702073 in words is "two hundred five million, seven hundred two thousand, seventy-three".