206444085 has 16 divisors (see below), whose sum is σ = 335242176. Its totient is φ = 108459648.

The previous prime is 206444081. The next prime is 206444089. The reversal of 206444085 is 580444602.

It is an interprime number because it is at equal distance from previous prime (206444081) and next prime (206444089).

It is not a de Polignac number, because 206444085 - 2² = 206444081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206444081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101704 + ... + 103713.

It is an arithmetic number, because the mean of its divisors is an integer number (20952636).

Almost surely, 2^206444085 is an apocalyptic number.

It is an amenable number.

206444085 is a deficient number, since it is larger than the sum of its proper divisors (128798091).

206444085 is a wasteful number, since it uses less digits than its factorization.

206444085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205492.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 206444085 is about 14368.1621998083. The cubic root of 206444085 is about 591.0181452911.

Adding to 206444085 its reverse (580444602), we get a palindrome (786888687).

The spelling of 206444085 in words is "two hundred six million, four hundred forty-four thousand, eighty-five".