206560841 has 2 divisors, whose sum is σ = 206560842. Its totient is φ = 206560840.

The previous prime is 206560787. The next prime is 206560847. The reversal of 206560841 is 148065602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141015625 + 65545216 = 11875^2 + 8096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206560841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206560798 and 206560807.

It is not a weakly prime, because it can be changed into another prime (206560847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103280420 + 103280421.

It is an arithmetic number, because the mean of its divisors is an integer number (103280421).

Almost surely, 2^206560841 is an apocalyptic number.

It is an amenable number.

206560841 is a deficient number, since it is larger than the sum of its proper divisors (1).

206560841 is an equidigital number, since it uses as much as digits as its factorization.

206560841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 206560841 is about 14372.2246364298. The cubic root of 206560841 is about 591.1295425409.

The spelling of 206560841 in words is "two hundred six million, five hundred sixty thousand, eight hundred forty-one".