206089097 has 2 divisors, whose sum is σ = 206089098. Its totient is φ = 206089096.

The previous prime is 206089087. The next prime is 206089099. The reversal of 206089097 is 790980602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204375616 + 1713481 = 14296^2 + 1309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206089097 is a prime.

Together with 206089099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206089099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103044548 + 103044549.

It is an arithmetic number, because the mean of its divisors is an integer number (103044549).

Almost surely, 2^206089097 is an apocalyptic number.

It is an amenable number.

206089097 is a deficient number, since it is larger than the sum of its proper divisors (1).

206089097 is an equidigital number, since it uses as much as digits as its factorization.

206089097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 206089097 is about 14355.8035999382. The cubic root of 206089097 is about 590.6791919780.

The spelling of 206089097 in words is "two hundred six million, eighty-nine thousand, ninety-seven".