205981063 has 8 divisors (see below), whose sum is σ = 207739616. Its totient is φ = 204228000.

The previous prime is 205981057. The next prime is 205981067. The reversal of 205981063 is 360189502.

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-205981063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205981067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109753 + ... + 111613.

It is an arithmetic number, because the mean of its divisors is an integer number (25967452).

Almost surely, 2^205981063 is an apocalyptic number.

205981063 is a deficient number, since it is larger than the sum of its proper divisors (1758553).

205981063 is a wasteful number, since it uses less digits than its factorization.

205981063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 205981063 is about 14352.0403775909. The cubic root of 205981063 is about 590.5759605916.

The spelling of 205981063 in words is "two hundred five million, nine hundred eighty-one thousand, sixty-three".