3643222 has 8 divisors (see below), whose sum is σ = 5961672. Its totient is φ = 1656000.

The previous prime is 3643217. The next prime is 3643267. The reversal of 3643222 is 2223463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 165601 = 3643222 / (3 + 6 + 4 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 3643193 and 3643202.

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, 82779 + ... + 82822.

It is an arithmetic number, because the mean of its divisors is an integer number (745209).

Almost surely, 2^3643222 is an apocalyptic number.

3643222 is a deficient number, since it is larger than the sum of its proper divisors (2318450).

3643222 is a wasteful number, since it uses less digits than its factorization.

3643222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165614.

The product of its digits is 1728, while the sum is 22.

The square root of 3643222 is about 1908.7226094957. The cubic root of 3643222 is about 153.8728077794.

Adding to 3643222 its reverse (2223463), we get a palindrome (5866685).

The spelling of 3643222 in words is "three million, six hundred forty-three thousand, two hundred twenty-two".