206012977 has 2 divisors, whose sum is σ = 206012978. Its totient is φ = 206012976.

The previous prime is 206012971. The next prime is 206012993. The reversal of 206012977 is 779210602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116445681 + 89567296 = 10791^2 + 9464^2 .

It is a cyclic number.

It is not a de Polignac number, because 206012977 - 2¹⁵ = 205980209 is a prime.

It is not a weakly prime, because it can be changed into another prime (206012971) 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, 103006488 + 103006489.

It is an arithmetic number, because the mean of its divisors is an integer number (103006489).

Almost surely, 2^206012977 is an apocalyptic number.

It is an amenable number.

206012977 is a deficient number, since it is larger than the sum of its proper divisors (1).

206012977 is an equidigital number, since it uses as much as digits as its factorization.

206012977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 206012977 is about 14353.1521625042. The cubic root of 206012977 is about 590.6064596216.

The spelling of 206012977 in words is "two hundred six million, twelve thousand, nine hundred seventy-seven".