205663982 has 16 divisors (see below), whose sum is σ = 327057792. Its totient is φ = 96824160.

The previous prime is 205663981. The next prime is 205663987. The reversal of 205663982 is 289366502.

205663982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205663981) 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, 42533 + ... + 47120.

It is an arithmetic number, because the mean of its divisors is an integer number (20441112).

Almost surely, 2^205663982 is an apocalyptic number.

205663982 is a deficient number, since it is larger than the sum of its proper divisors (121393810).

205663982 is a wasteful number, since it uses less digits than its factorization.

205663982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89723.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 205663982 is about 14340.9895753396. The cubic root of 205663982 is about 590.2727667229.

The spelling of 205663982 in words is "two hundred five million, six hundred sixty-three thousand, nine hundred eighty-two".