206106757 has 2 divisors, whose sum is σ = 206106758. Its totient is φ = 206106756.

The previous prime is 206106707. The next prime is 206106767. The reversal of 206106757 is 757601602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120099681 + 86007076 = 10959^2 + 9274^2 .

It is a cyclic number.

It is not a de Polignac number, because 206106757 - 2²³ = 197718149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206106707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103053378 + 103053379.

It is an arithmetic number, because the mean of its divisors is an integer number (103053379).

Almost surely, 2^206106757 is an apocalyptic number.

It is an amenable number.

206106757 is a deficient number, since it is larger than the sum of its proper divisors (1).

206106757 is an equidigital number, since it uses as much as digits as its factorization.

206106757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 206106757 is about 14356.4186690135. The cubic root of 206106757 is about 590.6960634780.

The spelling of 206106757 in words is "two hundred six million, one hundred six thousand, seven hundred fifty-seven".