206770829 has 2 divisors, whose sum is σ = 206770830. Its totient is φ = 206770828.

The previous prime is 206770819. The next prime is 206770843. The reversal of 206770829 is 928077602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167055625 + 39715204 = 12925^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 206770829 - 2⁸ = 206770573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206770819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103385414 + 103385415.

It is an arithmetic number, because the mean of its divisors is an integer number (103385415).

Almost surely, 2^206770829 is an apocalyptic number.

It is an amenable number.

206770829 is a deficient number, since it is larger than the sum of its proper divisors (1).

206770829 is an equidigital number, since it uses as much as digits as its factorization.

206770829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 206770829 is about 14379.5281216040. The cubic root of 206770829 is about 591.3297871279.

The spelling of 206770829 in words is "two hundred six million, seven hundred seventy thousand, eight hundred twenty-nine".