206117693 has 2 divisors, whose sum is σ = 206117694. Its totient is φ = 206117692.

The previous prime is 206117687. The next prime is 206117731. The reversal of 206117693 is 396711602.

206117693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200562244 + 5555449 = 14162^2 + 2357^2 .

It is a cyclic number.

It is not a de Polignac number, because 206117693 - 2⁴ = 206117677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206117893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103058846 + 103058847.

It is an arithmetic number, because the mean of its divisors is an integer number (103058847).

Almost surely, 2^206117693 is an apocalyptic number.

It is an amenable number.

206117693 is a deficient number, since it is larger than the sum of its proper divisors (1).

206117693 is an equidigital number, since it uses as much as digits as its factorization.

206117693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 206117693 is about 14356.7995388945. The cubic root of 206117693 is about 590.7065107141.

The spelling of 206117693 in words is "two hundred six million, one hundred seventeen thousand, six hundred ninety-three".