205765135 has 8 divisors (see below), whose sum is σ = 254883456. Its totient is φ = 159301920.

The previous prime is 205765129. The next prime is 205765141. The reversal of 205765135 is 531567502.

205765135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (205765129) and next prime (205765141).

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

It is not a de Polignac number, because 205765135 - 2¹⁵ = 205732367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205765135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663604 + ... + 663913.

It is an arithmetic number, because the mean of its divisors is an integer number (31860432).

Almost surely, 2^205765135 is an apocalyptic number.

205765135 is a deficient number, since it is larger than the sum of its proper divisors (49118321).

205765135 is a wasteful number, since it uses less digits than its factorization.

205765135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327553.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 205765135 is about 14344.5158510143. The cubic root of 205765135 is about 590.3695233749.

The spelling of 205765135 in words is "two hundred five million, seven hundred sixty-five thousand, one hundred thirty-five".