3683605 has 4 divisors (see below), whose sum is σ = 4420332. Its totient is φ = 2946880.

The previous prime is 3683599. The next prime is 3683627. The reversal of 3683605 is 5063863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5063863 = 7 ⋅723409.

It can be written as a sum of positive squares in 2 ways, for example, as 1661521 + 2022084 = 1289^2 + 1422^2 .

It is not a de Polignac number, because 3683605 - 2³ = 3683597 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 368356 + ... + 368365.

It is an arithmetic number, because the mean of its divisors is an integer number (1105083).

Almost surely, 2^3683605 is an apocalyptic number.

It is an amenable number.

3683605 is a deficient number, since it is larger than the sum of its proper divisors (736727).

3683605 is an equidigital number, since it uses as much as digits as its factorization.

3683605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736726.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3683605 is about 1919.2719973990. The cubic root of 3683605 is about 154.4392502475.

The spelling of 3683605 in words is "three million, six hundred eighty-three thousand, six hundred five".