3682221 has 4 divisors (see below), whose sum is σ = 4909632. Its totient is φ = 2454812.

The previous prime is 3682213. The next prime is 3682223. The reversal of 3682221 is 1222863.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1222863 = 3 ⋅407621.

It is a cyclic number.

It is not a de Polignac number, because 3682221 - 2³ = 3682213 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3682191 and 3682200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3682223) 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, 613701 + ... + 613706.

It is an arithmetic number, because the mean of its divisors is an integer number (1227408).

Almost surely, 2^3682221 is an apocalyptic number.

It is an amenable number.

3682221 is a deficient number, since it is larger than the sum of its proper divisors (1227411).

3682221 is a wasteful number, since it uses less digits than its factorization.

3682221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227410.

The product of its digits is 1152, while the sum is 24.

The square root of 3682221 is about 1918.9114101490. The cubic root of 3682221 is about 154.4199059098.

The spelling of 3682221 in words is "three million, six hundred eighty-two thousand, two hundred twenty-one".