3866216 has 16 divisors (see below), whose sum is σ = 7418400. Its totient is φ = 1887984.

The previous prime is 3866201. The next prime is 3866237. The reversal of 3866216 is 6126683.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5276 + ... + 5963.

It is an arithmetic number, because the mean of its divisors is an integer number (463650).

Almost surely, 2^3866216 is an apocalyptic number.

It is an amenable number.

3866216 is a deficient number, since it is larger than the sum of its proper divisors (3552184).

3866216 is a wasteful number, since it uses less digits than its factorization.

3866216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288 (or 11284 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 3866216 is about 1966.2695644290. The cubic root of 3866216 is about 156.9502594400.

The spelling of 3866216 in words is "three million, eight hundred sixty-six thousand, two hundred sixteen".