3605215 has 4 divisors (see below), whose sum is σ = 4326264. Its totient is φ = 2884168.

The previous prime is 3605201. The next prime is 3605221. The reversal of 3605215 is 5125063.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5125063 = 167 ⋅30689.

It is a cyclic number.

It is not a de Polignac number, because 3605215 - 2⁷ = 3605087 is a prime.

It is a Smith number, since the sum of its digits (22) 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 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, 360517 + ... + 360526.

It is an arithmetic number, because the mean of its divisors is an integer number (1081566).

Almost surely, 2^3605215 is an apocalyptic number.

3605215 is a deficient number, since it is larger than the sum of its proper divisors (721049).

3605215 is an equidigital number, since it uses as much as digits as its factorization.

3605215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721048.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3605215 is about 1898.7403719308. The cubic root of 3605215 is about 153.3358563962.

The spelling of 3605215 in words is "three million, six hundred five thousand, two hundred fifteen".