206702213 has 2 divisors, whose sum is σ = 206702214. Its totient is φ = 206702212.

The previous prime is 206702189. The next prime is 206702231. The reversal of 206702213 is 312207602.

Together with next prime (206702231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164685889 + 42016324 = 12833^2 + 6482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206702213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206702113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103351106 + 103351107.

It is an arithmetic number, because the mean of its divisors is an integer number (103351107).

Almost surely, 2^206702213 is an apocalyptic number.

It is an amenable number.

206702213 is a deficient number, since it is larger than the sum of its proper divisors (1).

206702213 is an equidigital number, since it uses as much as digits as its factorization.

206702213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 206702213 is about 14377.1420317113. The cubic root of 206702213 is about 591.2643698188.

Adding to 206702213 its reverse (312207602), we get a palindrome (518909815).

The spelling of 206702213 in words is "two hundred six million, seven hundred two thousand, two hundred thirteen".