1666300866 has 16 divisors (see below), whose sum is σ = 3528637344. Its totient is φ = 522761024.

The previous prime is 1666300861. The next prime is 1666300891. The reversal of 1666300866 is 6680036661.

1666300866 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1666300861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8168040 + ... + 8168243.

It is an arithmetic number, because the mean of its divisors is an integer number (220539834).

Almost surely, 2^1666300866 is an apocalyptic number.

1666300866 is an abundant number, since it is smaller than the sum of its proper divisors (1862336478).

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

1666300866 is a wasteful number, since it uses less digits than its factorization.

1666300866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16336305.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 1666300866 is about 40820.3486756299. The cubic root of 1666300866 is about 1185.5443542205.

The spelling of 1666300866 in words is "one billion, six hundred sixty-six million, three hundred thousand, eight hundred sixty-six".