206664908 has 6 divisors (see below), whose sum is σ = 361663596. Its totient is φ = 103332452.

The previous prime is 206664907. The next prime is 206664961. The reversal of 206664908 is 809466602.

It is not an unprimeable number, because it can be changed into a prime (206664901) 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 as a sum of consecutive naturals, namely, 25833110 + ... + 25833117.

It is an arithmetic number, because the mean of its divisors is an integer number (60277266).

Almost surely, 2^206664908 is an apocalyptic number.

It is an amenable number.

206664908 is a deficient number, since it is larger than the sum of its proper divisors (154998688).

206664908 is a wasteful number, since it uses less digits than its factorization.

206664908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51666231 (or 51666229 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 206664908 is about 14375.8446012747. The cubic root of 206664908 is about 591.2287978011.

The spelling of 206664908 in words is "two hundred six million, six hundred sixty-four thousand, nine hundred eight".