206249 has 2 divisors, whose sum is σ = 206250. Its totient is φ = 206248.

The previous prime is 206237. The next prime is 206251. The reversal of 206249 is 942602.

206249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196249 + 10000 = 443^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 206249 - 2⁴ = 206233 is a prime.

Together with 206251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103124 + 103125.

It is an arithmetic number, because the mean of its divisors is an integer number (103125).

2²⁰⁶²⁴⁹ is an apocalyptic number.

It is an amenable number.

206249 is a deficient number, since it is larger than the sum of its proper divisors (1).

206249 is an equidigital number, since it uses as much as digits as its factorization.

206249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 206249 is about 454.1464521495. The cubic root of 206249 is about 59.0831920351.

The spelling of 206249 in words is "two hundred six thousand, two hundred forty-nine".