206560117 has 2 divisors, whose sum is σ = 206560118. Its totient is φ = 206560116.

The previous prime is 206560111. The next prime is 206560157. The reversal of 206560117 is 711065602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161951076 + 44609041 = 12726^2 + 6679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206560117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206560111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103280058 + 103280059.

It is an arithmetic number, because the mean of its divisors is an integer number (103280059).

Almost surely, 2^206560117 is an apocalyptic number.

It is an amenable number.

206560117 is a deficient number, since it is larger than the sum of its proper divisors (1).

206560117 is an equidigital number, since it uses as much as digits as its factorization.

206560117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 206560117 is about 14372.1994489361. The cubic root of 206560117 is about 591.1288518996.

The spelling of 206560117 in words is "two hundred six million, five hundred sixty thousand, one hundred seventeen".