206036813 has 2 divisors, whose sum is σ = 206036814. Its totient is φ = 206036812.

The previous prime is 206036807. The next prime is 206036837. The reversal of 206036813 is 318630602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113145769 + 92891044 = 10637^2 + 9638^2 .

It is a cyclic number.

It is not a de Polignac number, because 206036813 - 2⁴ = 206036797 is a prime.

It is a super-2 number, since 2×206036813² = 84902336622393938, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206036863) 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, 103018406 + 103018407.

It is an arithmetic number, because the mean of its divisors is an integer number (103018407).

Almost surely, 2^206036813 is an apocalyptic number.

It is an amenable number.

206036813 is a deficient number, since it is larger than the sum of its proper divisors (1).

206036813 is an equidigital number, since it uses as much as digits as its factorization.

206036813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 206036813 is about 14353.9824787409. The cubic root of 206036813 is about 590.6292367510.

The spelling of 206036813 in words is "two hundred six million, thirty-six thousand, eight hundred thirteen".