3866604 has 48 divisors (see below), whose sum is σ = 10407936. Its totient is φ = 1094400.

The previous prime is 3866581. The next prime is 3866609. The reversal of 3866604 is 4066683.

It is not an unprimeable number, because it can be changed into a prime (3866609) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15924 + ... + 16164.

It is an arithmetic number, because the mean of its divisors is an integer number (216832).

Almost surely, 2^3866604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3866604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5203968).

3866604 is an abundant number, since it is smaller than the sum of its proper divisors (6541332).

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

3866604 is a wasteful number, since it uses less digits than its factorization.

3866604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 3866604 is about 1966.3682259435. The cubic root of 3866604 is about 156.9555095919.

The spelling of 3866604 in words is "three million, eight hundred sixty-six thousand, six hundred four".