3687222 has 64 divisors (see below), whose sum is σ = 9621504. Its totient is φ = 913440.

The previous prime is 3687209. The next prime is 3687227. The reversal of 3687222 is 2227863.

It is a self number, because there is not a number n which added to its sum of digits gives 3687222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3687227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10453 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (150336).

Almost surely, 2^3687222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3687222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4810752).

3687222 is an abundant number, since it is smaller than the sum of its proper divisors (5934282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3687222 is a wasteful number, since it uses less digits than its factorization.

3687222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its digits is 8064, while the sum is 30.

The square root of 3687222 is about 1920.2140505683. The cubic root of 3687222 is about 154.4897826320.

The spelling of 3687222 in words is "three million, six hundred eighty-seven thousand, two hundred twenty-two".