206484217 has 2 divisors, whose sum is σ = 206484218. Its totient is φ = 206484216.

The previous prime is 206484199. The next prime is 206484233. The reversal of 206484217 is 712484602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129413376 + 77070841 = 11376^2 + 8779^2 .

It is a cyclic number.

It is not a de Polignac number, because 206484217 - 2¹¹ = 206482169 is a prime.

It is not a weakly prime, because it can be changed into another prime (206484287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103242108 + 103242109.

It is an arithmetic number, because the mean of its divisors is an integer number (103242109).

Almost surely, 2^206484217 is an apocalyptic number.

It is an amenable number.

206484217 is a deficient number, since it is larger than the sum of its proper divisors (1).

206484217 is an equidigital number, since it uses as much as digits as its factorization.

206484217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 206484217 is about 14369.5586919014. The cubic root of 206484217 is about 591.0564400888.

The spelling of 206484217 in words is "two hundred six million, four hundred eighty-four thousand, two hundred seventeen".