206746065 has 12 divisors (see below), whose sum is σ = 358359924. Its totient is φ = 110264544.

The previous prime is 206746063. The next prime is 206746069. The reversal of 206746065 is 560647602.

It can be written as a sum of positive squares in 2 ways, for example, as 148864401 + 57881664 = 12201^2 + 7608^2 .

It is not a de Polignac number, because 206746065 - 2¹ = 206746063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206746063) 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 11 ways as a sum of consecutive naturals, for example, 2297134 + ... + 2297223.

It is an arithmetic number, because the mean of its divisors is an integer number (29863327).

Almost surely, 2^206746065 is an apocalyptic number.

It is an amenable number.

206746065 is a deficient number, since it is larger than the sum of its proper divisors (151613859).

206746065 is a wasteful number, since it uses less digits than its factorization.

206746065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594368 (or 4594365 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 206746065 is about 14378.6670105403. The cubic root of 206746065 is about 591.3061792274.

The spelling of 206746065 in words is "two hundred six million, seven hundred forty-six thousand, sixty-five".