3876658666 has 8 divisors (see below), whose sum is σ = 5850663264. Its totient is φ = 1926437580.

The previous prime is 3876658657. The next prime is 3876658727. The reversal of 3876658666 is 6668566783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5945470 + ... + 5946121.

It is an arithmetic number, because the mean of its divisors is an integer number (731332908).

Almost surely, 2^3876658666 is an apocalyptic number.

3876658666 is a deficient number, since it is larger than the sum of its proper divisors (1974004598).

3876658666 is a wasteful number, since it uses less digits than its factorization.

3876658666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891756.

The product of its digits is 52254720, while the sum is 61.

The square root of 3876658666 is about 62262.8192904883. The cubic root of 3876658666 is about 1570.9144018094.

The spelling of 3876658666 in words is "three billion, eight hundred seventy-six million, six hundred fifty-eight thousand, six hundred sixty-six".