206246947 has 2 divisors, whose sum is σ = 206246948. Its totient is φ = 206246946.

The previous prime is 206246879. The next prime is 206246969. The reversal of 206246947 is 749642602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206246947 - 2¹⁵ = 206214179 is a prime.

It is not a weakly prime, because it can be changed into another prime (206246147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103123473 + 103123474.

It is an arithmetic number, because the mean of its divisors is an integer number (103123474).

Almost surely, 2^206246947 is an apocalyptic number.

206246947 is a deficient number, since it is larger than the sum of its proper divisors (1).

206246947 is an equidigital number, since it uses as much as digits as its factorization.

206246947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 206246947 is about 14361.3003241350. The cubic root of 206246947 is about 590.8299599664.

The spelling of 206246947 in words is "two hundred six million, two hundred forty-six thousand, nine hundred forty-seven".