3684605 has 4 divisors (see below), whose sum is σ = 4421532. Its totient is φ = 2947680.

The previous prime is 3684601. The next prime is 3684607. The reversal of 3684605 is 5064863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5064863 = 1987 ⋅2549.

It can be written as a sum of positive squares in 2 ways, for example, as 2181529 + 1503076 = 1477^2 + 1226^2 .

It is not a de Polignac number, because 3684605 - 2² = 3684601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3684601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368456 + ... + 368465.

It is an arithmetic number, because the mean of its divisors is an integer number (1105383).

Almost surely, 2^3684605 is an apocalyptic number.

It is an amenable number.

3684605 is a deficient number, since it is larger than the sum of its proper divisors (736927).

3684605 is an equidigital number, since it uses as much as digits as its factorization.

3684605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736926.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 3684605 is about 1919.5324951665. The cubic root of 3684605 is about 154.4532243550.

The spelling of 3684605 in words is "three million, six hundred eighty-four thousand, six hundred five".