206954117 has 2 divisors, whose sum is σ = 206954118. Its totient is φ = 206954116.

The previous prime is 206954071. The next prime is 206954119. The reversal of 206954117 is 711459602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190053796 + 16900321 = 13786^2 + 4111^2 .

It is a cyclic number.

It is not a de Polignac number, because 206954117 - 2¹⁰ = 206953093 is a prime.

Together with 206954119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206954119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103477058 + 103477059.

It is an arithmetic number, because the mean of its divisors is an integer number (103477059).

Almost surely, 2^206954117 is an apocalyptic number.

It is an amenable number.

206954117 is a deficient number, since it is larger than the sum of its proper divisors (1).

206954117 is an equidigital number, since it uses as much as digits as its factorization.

206954117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 206954117 is about 14385.8999370912. The cubic root of 206954117 is about 591.5044598085.

The spelling of 206954117 in words is "two hundred six million, nine hundred fifty-four thousand, one hundred seventeen".