206650243 has 2 divisors, whose sum is σ = 206650244. Its totient is φ = 206650242.

The previous prime is 206650159. The next prime is 206650253. The reversal of 206650243 is 342056602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206650243 is a prime.

It is not a weakly prime, because it can be changed into another prime (206650253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103325121 + 103325122.

It is an arithmetic number, because the mean of its divisors is an integer number (103325122).

Almost surely, 2^206650243 is an apocalyptic number.

206650243 is a deficient number, since it is larger than the sum of its proper divisors (1).

206650243 is an equidigital number, since it uses as much as digits as its factorization.

206650243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 206650243 is about 14375.3345352378. The cubic root of 206650243 is about 591.2148128830.

The spelling of 206650243 in words is "two hundred six million, six hundred fifty thousand, two hundred forty-three".