3856666 has 8 divisors (see below), whose sum is σ = 6310944. Its totient is φ = 1753020.

The previous prime is 3856661. The next prime is 3856667. The reversal of 3856666 is 6666583.

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

It is not an unprimeable number, because it can be changed into a prime (3856661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87630 + ... + 87673.

It is an arithmetic number, because the mean of its divisors is an integer number (788868).

Almost surely, 2^3856666 is an apocalyptic number.

3856666 is a deficient number, since it is larger than the sum of its proper divisors (2454278).

3856666 is a wasteful number, since it uses less digits than its factorization.

3856666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175316.

The product of its digits is 155520, while the sum is 40.

The square root of 3856666 is about 1963.8396064852. The cubic root of 3856666 is about 156.8209244688.

The spelling of 3856666 in words is "three million, eight hundred fifty-six thousand, six hundred sixty-six".