208104866 has 4 divisors (see below), whose sum is σ = 312157302. Its totient is φ = 104052432.

The previous prime is 208104857. The next prime is 208104901. The reversal of 208104866 is 668401802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 141110641 + 66994225 = 11879^2 + 8185^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52026215 + ... + 52026218.

Almost surely, 2^208104866 is an apocalyptic number.

208104866 is a deficient number, since it is larger than the sum of its proper divisors (104052436).

208104866 is a wasteful number, since it uses less digits than its factorization.

208104866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104052435.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 208104866 is about 14425.8402181641. The cubic root of 208104866 is about 592.5987691041.

The spelling of 208104866 in words is "two hundred eight million, one hundred four thousand, eight hundred sixty-six".