3605321 has 4 divisors (see below), whose sum is σ = 3610500. Its totient is φ = 3600144.

The previous prime is 3605311. The next prime is 3605341. The reversal of 3605321 is 1235063.

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 846400 + 2758921 = 920^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3605321 - 2⁶ = 3605257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3605293 and 3605302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (902625).

Almost surely, 2^3605321 is an apocalyptic number.

It is an amenable number.

3605321 is a deficient number, since it is larger than the sum of its proper divisors (5179).

3605321 is an equidigital number, since it uses as much as digits as its factorization.

3605321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3605321 is about 1898.7682849679. The cubic root of 3605321 is about 153.3373591676.

The spelling of 3605321 in words is "three million, six hundred five thousand, three hundred twenty-one".