206804077 has 2 divisors, whose sum is σ = 206804078. Its totient is φ = 206804076.

The previous prime is 206804057. The next prime is 206804083. The reversal of 206804077 is 770408602.

206804077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133033156 + 73770921 = 11534^2 + 8589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206804077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206804057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103402038 + 103402039.

It is an arithmetic number, because the mean of its divisors is an integer number (103402039).

Almost surely, 2^206804077 is an apocalyptic number.

It is an amenable number.

206804077 is a deficient number, since it is larger than the sum of its proper divisors (1).

206804077 is an equidigital number, since it uses as much as digits as its factorization.

206804077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 206804077 is about 14380.6841631405. The cubic root of 206804077 is about 591.3614799915.

The spelling of 206804077 in words is "two hundred six million, eight hundred four thousand, seventy-seven".