206433077 has 2 divisors, whose sum is σ = 206433078. Its totient is φ = 206433076.

The previous prime is 206433037. The next prime is 206433109. The reversal of 206433077 is 770334602.

It is an a-pointer prime, because the next prime (206433109) can be obtained adding 206433077 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191794801 + 14638276 = 13849^2 + 3826^2 .

It is a cyclic number.

It is not a de Polignac number, because 206433077 - 2⁶ = 206433013 is a prime.

It is a super-2 number, since 2×206433077² = 85229230559375858, 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 (206433037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103216538 + 103216539.

It is an arithmetic number, because the mean of its divisors is an integer number (103216539).

Almost surely, 2^206433077 is an apocalyptic number.

It is an amenable number.

206433077 is a deficient number, since it is larger than the sum of its proper divisors (1).

206433077 is an equidigital number, since it uses as much as digits as its factorization.

206433077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 206433077 is about 14367.7791255295. The cubic root of 206433077 is about 591.0076403588.

Adding to 206433077 its reverse (770334602), we get a palindrome (976767679).

The spelling of 206433077 in words is "two hundred six million, four hundred thirty-three thousand, seventy-seven".