206673253 has 2 divisors, whose sum is σ = 206673254. Its totient is φ = 206673252.

The previous prime is 206673217. The next prime is 206673287. The reversal of 206673253 is 352376602.

It is an a-pointer prime, because the next prime (206673287) can be obtained adding 206673253 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156575169 + 50098084 = 12513^2 + 7078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206673253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206671253) 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, 103336626 + 103336627.

It is an arithmetic number, because the mean of its divisors is an integer number (103336627).

Almost surely, 2^206673253 is an apocalyptic number.

It is an amenable number.

206673253 is a deficient number, since it is larger than the sum of its proper divisors (1).

206673253 is an equidigital number, since it uses as much as digits as its factorization.

206673253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 206673253 is about 14376.1348421612. The cubic root of 206673253 is about 591.2367555106.

The spelling of 206673253 in words is "two hundred six million, six hundred seventy-three thousand, two hundred fifty-three".