208317066 has 16 divisors (see below), whose sum is σ = 425499264. Its totient is φ = 67961504.

The previous prime is 208317047. The next prime is 208317071. The reversal of 208317066 is 660713802.

It is a Curzon number.

It is an unprimeable number.

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, 369075 + ... + 369638.

It is an arithmetic number, because the mean of its divisors is an integer number (26593704).

Almost surely, 2^208317066 is an apocalyptic number.

208317066 is an abundant number, since it is smaller than the sum of its proper divisors (217182198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208317066 is a wasteful number, since it uses less digits than its factorization.

208317066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738765.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 208317066 is about 14433.1932017832. The cubic root of 208317066 is about 592.8001207017.

The spelling of 208317066 in words is "two hundred eight million, three hundred seventeen thousand, sixty-six".