206064247 has 2 divisors, whose sum is σ = 206064248. Its totient is φ = 206064246.

The previous prime is 206064239. The next prime is 206064251. The reversal of 206064247 is 742460602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206064247 - 2³ = 206064239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206004247) 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, 103032123 + 103032124.

It is an arithmetic number, because the mean of its divisors is an integer number (103032124).

Almost surely, 2^206064247 is an apocalyptic number.

206064247 is a deficient number, since it is larger than the sum of its proper divisors (1).

206064247 is an equidigital number, since it uses as much as digits as its factorization.

206064247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 206064247 is about 14354.9380702252. The cubic root of 206064247 is about 590.6554498714.

The spelling of 206064247 in words is "two hundred six million, sixty-four thousand, two hundred forty-seven".