3606221 has 4 divisors (see below), whose sum is σ = 3640032. Its totient is φ = 3572412.

The previous prime is 3606209. The next prime is 3606223. The reversal of 3606221 is 1226063.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3606221 - 2⁶ = 3606157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3606193 and 3606202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3606223) 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, 16745 + ... + 16958.

It is an arithmetic number, because the mean of its divisors is an integer number (910008).

Almost surely, 2^3606221 is an apocalyptic number.

It is an amenable number.

3606221 is a deficient number, since it is larger than the sum of its proper divisors (33811).

3606221 is a wasteful number, since it uses less digits than its factorization.

3606221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33810.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3606221 is about 1899.0052659221. The cubic root of 3606221 is about 153.3501173604.

Subtracting from 3606221 its sum of digits (20), we obtain a square (3606201 = 1899²).

The spelling of 3606221 in words is "three million, six hundred six thousand, two hundred twenty-one".