206135265 has 16 divisors (see below), whose sum is σ = 376933248. Its totient is φ = 94233216.

The previous prime is 206135263. The next prime is 206135297. The reversal of 206135265 is 562531602.

It is not a de Polignac number, because 206135265 - 2¹ = 206135263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206135263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981492 + ... + 981701.

It is an arithmetic number, because the mean of its divisors is an integer number (23558328).

Almost surely, 2^206135265 is an apocalyptic number.

It is an amenable number.

206135265 is a deficient number, since it is larger than the sum of its proper divisors (170797983).

206135265 is a wasteful number, since it uses less digits than its factorization.

206135265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963208.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 206135265 is about 14357.4115006849. The cubic root of 206135265 is about 590.7232965929.

Adding to 206135265 its reverse (562531602), we get a palindrome (768666867).

It can be divided in two parts, 20613 and 5265, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 206135265 in words is "two hundred six million, one hundred thirty-five thousand, two hundred sixty-five".