206893980697 has 2 divisors, whose sum is σ = 206893980698. Its totient is φ = 206893980696.

The previous prime is 206893980673. The next prime is 206893980743. The reversal of 206893980697 is 796089398602.

206893980697 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., 158805438016 + 48088542681 = 398504^2 + 219291^2 .

It is a cyclic number.

It is not a de Polignac number, because 206893980697 - 2¹⁵ = 206893947929 is a prime.

It is not a weakly prime, because it can be changed into another prime (206893980637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103446990348 + 103446990349.

It is an arithmetic number, because the mean of its divisors is an integer number (103446990349).

Almost surely, 2^206893980697 is an apocalyptic number.

It is an amenable number.

206893980697 is a deficient number, since it is larger than the sum of its proper divisors (1).

206893980697 is an equidigital number, since it uses as much as digits as its factorization.

206893980697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 67.

The spelling of 206893980697 in words is "two hundred six billion, eight hundred ninety-three million, nine hundred eighty thousand, six hundred ninety-seven".