3866365 has 4 divisors (see below), whose sum is σ = 4639644. Its totient is φ = 3093088.

The previous prime is 3866333. The next prime is 3866393. The reversal of 3866365 is 5636683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 2256004 = 1269^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866365 - 2⁵ = 3866333 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 386632 + ... + 386641.

It is an arithmetic number, because the mean of its divisors is an integer number (1159911).

Almost surely, 2^3866365 is an apocalyptic number.

It is an amenable number.

3866365 is a deficient number, since it is larger than the sum of its proper divisors (773279).

3866365 is an equidigital number, since it uses as much as digits as its factorization.

3866365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773278.

The product of its digits is 77760, while the sum is 37.

The square root of 3866365 is about 1966.3074530703. The cubic root of 3866365 is about 156.9522756481.

The spelling of 3866365 in words is "three million, eight hundred sixty-six thousand, three hundred sixty-five".