206616143 has 2 divisors, whose sum is σ = 206616144. Its totient is φ = 206616142.

The previous prime is 206616131. The next prime is 206616167. The reversal of 206616143 is 341616602.

It is a happy number.

206616143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206616143 - 2¹⁶ = 206550607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206616743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103308071 + 103308072.

It is an arithmetic number, because the mean of its divisors is an integer number (103308072).

Almost surely, 2^206616143 is an apocalyptic number.

206616143 is a deficient number, since it is larger than the sum of its proper divisors (1).

206616143 is an equidigital number, since it uses as much as digits as its factorization.

206616143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 206616143 is about 14374.1484269504. The cubic root of 206616143 is about 591.1822916951.

The spelling of 206616143 in words is "two hundred six million, six hundred sixteen thousand, one hundred forty-three".