206671253 has 2 divisors, whose sum is σ = 206671254. Its totient is φ = 206671252.

The previous prime is 206671243. The next prime is 206671301. The reversal of 206671253 is 352176602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194407249 + 12264004 = 13943^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 206671253 - 2¹⁰ = 206670229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206671243) 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, 103335626 + 103335627.

It is an arithmetic number, because the mean of its divisors is an integer number (103335627).

Almost surely, 2^206671253 is an apocalyptic number.

It is an amenable number.

206671253 is a deficient number, since it is larger than the sum of its proper divisors (1).

206671253 is an equidigital number, since it uses as much as digits as its factorization.

206671253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 206671253 is about 14376.0652822669. The cubic root of 206671253 is about 591.2348483499.

The spelling of 206671253 in words is "two hundred six million, six hundred seventy-one thousand, two hundred fifty-three".