205080663 has 8 divisors (see below), whose sum is σ = 282870000. Its totient is φ = 132005888.

The previous prime is 205080641. The next prime is 205080671. The reversal of 205080663 is 366080502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205080663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205080663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205080613) by changing a digit.

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, 1178538 + ... + 1178711.

It is an arithmetic number, because the mean of its divisors is an integer number (35358750).

Almost surely, 2^205080663 is an apocalyptic number.

205080663 is a deficient number, since it is larger than the sum of its proper divisors (77789337).

205080663 is a wasteful number, since it uses less digits than its factorization.

205080663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357281.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 205080663 is about 14320.6376603837. The cubic root of 205080663 is about 589.7141802421.

The spelling of 205080663 in words is "two hundred five million, eighty thousand, six hundred sixty-three".