206952173 has 2 divisors, whose sum is σ = 206952174. Its totient is φ = 206952172.

The previous prime is 206952089. The next prime is 206952197. The reversal of 206952173 is 371259602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150356644 + 56595529 = 12262^2 + 7523^2 .

It is a cyclic number.

It is not a de Polignac number, because 206952173 - 2¹⁴ = 206935789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206952973) 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, 103476086 + 103476087.

It is an arithmetic number, because the mean of its divisors is an integer number (103476087).

Almost surely, 2^206952173 is an apocalyptic number.

It is an amenable number.

206952173 is a deficient number, since it is larger than the sum of its proper divisors (1).

206952173 is an equidigital number, since it uses as much as digits as its factorization.

206952173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 206952173 is about 14385.8323707737. The cubic root of 206952173 is about 591.5026077260.

The spelling of 206952173 in words is "two hundred six million, nine hundred fifty-two thousand, one hundred seventy-three".