3683811666 has 16 divisors (see below), whose sum is σ = 7370809344. Its totient is φ = 1227406224.

The previous prime is 3683811661. The next prime is 3683811689. The reversal of 3683811666 is 6661183863.

It is not an unprimeable number, because it can be changed into a prime (3683811661) 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, 117586 + ... + 145581.

It is an arithmetic number, because the mean of its divisors is an integer number (460675584).

Almost surely, 2^3683811666 is an apocalyptic number.

3683811666 is an abundant number, since it is smaller than the sum of its proper divisors (3686997678).

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

3683811666 is a wasteful number, since it uses less digits than its factorization.

3683811666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265505.

The product of its digits is 746496, while the sum is 48.

The square root of 3683811666 is about 60694.4121480718. The cubic root of 3683811666 is about 1544.4213842773.

The spelling of 3683811666 in words is "three billion, six hundred eighty-three million, eight hundred eleven thousand, six hundred sixty-six".