206608983 has 16 divisors (see below), whose sum is σ = 331403520. Its totient is φ = 111848256.

The previous prime is 206608979. The next prime is 206608991. The reversal of 206608983 is 389806602.

It is not a de Polignac number, because 206608983 - 2² = 206608979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206608943) 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 15 ways as a sum of consecutive naturals, for example, 258510 + ... + 259307.

It is an arithmetic number, because the mean of its divisors is an integer number (20712720).

Almost surely, 2^206608983 is an apocalyptic number.

206608983 is a deficient number, since it is larger than the sum of its proper divisors (124794537).

206608983 is a wasteful number, since it uses less digits than its factorization.

206608983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517846.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 206608983 is about 14373.8993665602. The cubic root of 206608983 is about 591.1754627448.

The spelling of 206608983 in words is "two hundred six million, six hundred eight thousand, nine hundred eighty-three".