3865766 has 16 divisors (see below), whose sum is σ = 6235056. Its totient is φ = 1790976.

The previous prime is 3865747. The next prime is 3865769. The reversal of 3865766 is 6675683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865769) 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, 1430 + ... + 3126.

It is an arithmetic number, because the mean of its divisors is an integer number (389691).

Almost surely, 2^3865766 is an apocalyptic number.

3865766 is a deficient number, since it is larger than the sum of its proper divisors (2369290).

3865766 is a wasteful number, since it uses less digits than its factorization.

3865766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its digits is 181440, while the sum is 41.

The square root of 3865766 is about 1966.1551312142. The cubic root of 3865766 is about 156.9441699064.

The spelling of 3865766 in words is "three million, eight hundred sixty-five thousand, seven hundred sixty-six".