205015066 has 8 divisors (see below), whose sum is σ = 307625364. Its totient is φ = 102473280.

The previous prime is 205015051. The next prime is 205015067. The reversal of 205015066 is 660510502.

It can be written as a sum of positive squares in 2 ways, for example, as 200930625 + 4084441 = 14175^2 + 2021^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 205015066.

It is not an unprimeable number, because it can be changed into a prime (205015067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8845 + ... + 22096.

Almost surely, 2^205015066 is an apocalyptic number.

205015066 is a deficient number, since it is larger than the sum of its proper divisors (102610298).

205015066 is a wasteful number, since it uses less digits than its factorization.

205015066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34256.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 205015066 is about 14318.3471811519. The cubic root of 205015066 is about 589.6512983080.

Adding to 205015066 its reverse (660510502), we get a palindrome (865525568).

The spelling of 205015066 in words is "two hundred five million, fifteen thousand, sixty-six".