206145235 has 4 divisors (see below), whose sum is σ = 247374288. Its totient is φ = 164916184.

The previous prime is 206145229. The next prime is 206145287. The reversal of 206145235 is 532541602.

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 206145235 - 2³ = 206145227 is a prime.

It is a Duffinian 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, 20614519 + ... + 20614528.

It is an arithmetic number, because the mean of its divisors is an integer number (61843572).

Almost surely, 2^206145235 is an apocalyptic number.

206145235 is a deficient number, since it is larger than the sum of its proper divisors (41229053).

206145235 is an equidigital number, since it uses as much as digits as its factorization.

206145235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41229052.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 206145235 is about 14357.7587039203. The cubic root of 206145235 is about 590.7328201394.

Adding to 206145235 its reverse (532541602), we get a palindrome (738686837).

The spelling of 206145235 in words is "two hundred six million, one hundred forty-five thousand, two hundred thirty-five".