206340535 has 4 divisors (see below), whose sum is σ = 247608648. Its totient is φ = 165072424.

The previous prime is 206340529. The next prime is 206340553. The reversal of 206340535 is 535043602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206340535 - 2²⁷ = 72122807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20634049 + ... + 20634058.

It is an arithmetic number, because the mean of its divisors is an integer number (61902162).

Almost surely, 2^206340535 is an apocalyptic number.

206340535 is a deficient number, since it is larger than the sum of its proper divisors (41268113).

206340535 is an equidigital number, since it uses as much as digits as its factorization.

206340535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41268112.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 206340535 is about 14364.5582946361. The cubic root of 206340535 is about 590.9193127764.

The spelling of 206340535 in words is "two hundred six million, three hundred forty thousand, five hundred thirty-five".