200666243 has 2 divisors, whose sum is σ = 200666244. Its totient is φ = 200666242.

The previous prime is 200666233. The next prime is 200666261. The reversal of 200666243 is 342666002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200666243 is a prime.

It is not a weakly prime, because it can be changed into another prime (200666233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100333121 + 100333122.

It is an arithmetic number, because the mean of its divisors is an integer number (100333122).

Almost surely, 2^200666243 is an apocalyptic number.

200666243 is a deficient number, since it is larger than the sum of its proper divisors (1).

200666243 is an equidigital number, since it uses as much as digits as its factorization.

200666243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 200666243 is about 14165.6712865999. The cubic root of 200666243 is about 585.4521966950.

The spelling of 200666243 in words is "two hundred million, six hundred sixty-six thousand, two hundred forty-three".