3684445 has 4 divisors (see below), whose sum is σ = 4421340. Its totient is φ = 2947552.

The previous prime is 3684419. The next prime is 3684451. The reversal of 3684445 is 5444863.

3684445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 715716 + 2968729 = 846^2 + 1723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3684445 is a prime.

3684445 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3684445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368440 + ... + 368449.

It is an arithmetic number, because the mean of its divisors is an integer number (1105335).

Almost surely, 2^3684445 is an apocalyptic number.

It is an amenable number.

3684445 is a deficient number, since it is larger than the sum of its proper divisors (736895).

3684445 is an equidigital number, since it uses as much as digits as its factorization.

3684445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736894.

The product of its digits is 46080, while the sum is 34.

The square root of 3684445 is about 1919.4908178994. The cubic root of 3684445 is about 154.4509886678.

It can be divided in two parts, 368444 and 5, that added together give a square (368449 = 607²).

The spelling of 3684445 in words is "three million, six hundred eighty-four thousand, four hundred forty-five".