206565065 has 8 divisors (see below), whose sum is σ = 283289280. Its totient is φ = 141644592.

The previous prime is 206565049. The next prime is 206565083. The reversal of 206565065 is 560565602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206565065 - 2⁴ = 206565049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 5901859 = 206565065 / (2 + 0 + 6 + 5 + 6 + 5 + 0 + 6 + 5).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950895 + ... + 2950964.

It is an arithmetic number, because the mean of its divisors is an integer number (35411160).

Almost surely, 2^206565065 is an apocalyptic number.

It is an amenable number.

206565065 is a deficient number, since it is larger than the sum of its proper divisors (76724215).

206565065 is an equidigital number, since it uses as much as digits as its factorization.

206565065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901871.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 206565065 is about 14372.3715857892. The cubic root of 206565065 is about 591.1335718850.

The spelling of 206565065 in words is "two hundred six million, five hundred sixty-five thousand, sixty-five".