205302065 has 8 divisors (see below), whose sum is σ = 246475008. Its totient is φ = 164166640.

The previous prime is 205302059. The next prime is 205302079. The reversal of 205302065 is 560203502.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-205302065 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 205302065.

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 7 ways as a sum of consecutive naturals, for example, 4544 + ... + 20766.

It is an arithmetic number, because the mean of its divisors is an integer number (30809376).

Almost surely, 2^205302065 is an apocalyptic number.

It is an amenable number.

205302065 is a deficient number, since it is larger than the sum of its proper divisors (41172943).

205302065 is a wasteful number, since it uses less digits than its factorization.

205302065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18759.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 205302065 is about 14328.3657477048. The cubic root of 205302065 is about 589.9263194402.

Adding to 205302065 its reverse (560203502), we get a palindrome (765505567).

The spelling of 205302065 in words is "two hundred five million, three hundred two thousand, sixty-five".