208080666 has 24 divisors (see below), whose sum is σ = 474570720. Its totient is φ = 65709576.

The previous prime is 208080641. The next prime is 208080667. The reversal of 208080666 is 666080802.

208080666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208080666.

It is not an unprimeable number, because it can be changed into a prime (208080667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303870 + ... + 304553.

It is an arithmetic number, because the mean of its divisors is an integer number (19773780).

Almost surely, 2^208080666 is an apocalyptic number.

208080666 is an abundant number, since it is smaller than the sum of its proper divisors (266490054).

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

208080666 is a wasteful number, since it uses less digits than its factorization.

208080666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608450 (or 608447 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 208080666 is about 14425.0014211438. The cubic root of 208080666 is about 592.5757975988.

The spelling of 208080666 in words is "two hundred eight million, eighty thousand, six hundred sixty-six".