206748653 has 2 divisors, whose sum is σ = 206748654. Its totient is φ = 206748652.

The previous prime is 206748643. The next prime is 206748673. The reversal of 206748653 is 356847602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194379364 + 12369289 = 13942^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 206748653 - 2⁸ = 206748397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206748653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206748643) 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, 103374326 + 103374327.

It is an arithmetic number, because the mean of its divisors is an integer number (103374327).

Almost surely, 2^206748653 is an apocalyptic number.

It is an amenable number.

206748653 is a deficient number, since it is larger than the sum of its proper divisors (1).

206748653 is an equidigital number, since it uses as much as digits as its factorization.

206748653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 206748653 is about 14378.7570046927. The cubic root of 206748653 is about 591.3086464956.

The spelling of 206748653 in words is "two hundred six million, seven hundred forty-eight thousand, six hundred fifty-three".