205006765 has 8 divisors (see below), whose sum is σ = 252008568. Its totient is φ = 160005120.

The previous prime is 205006759. The next prime is 205006793. The reversal of 205006765 is 567600502.

205006765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 204976489 = 174^2 + 14317^2 .

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

It is not a de Polignac number, because 205006765 - 2⁹ = 205006253 is a prime.

It is a Duffinian number.

205006765 is a modest number, since divided by 6765 gives 205 as remainder.

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, 499812 + ... + 500221.

It is an arithmetic number, because the mean of its divisors is an integer number (31501071).

Almost surely, 2^205006765 is an apocalyptic number.

It is an amenable number.

205006765 is a deficient number, since it is larger than the sum of its proper divisors (47001803).

205006765 is a wasteful number, since it uses less digits than its factorization.

205006765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000079.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 205006765 is about 14318.0573053749. The cubic root of 205006765 is about 589.6433399311.

The spelling of 205006765 in words is "two hundred five million, six thousand, seven hundred sixty-five".