3220668 has 48 divisors (see below), whose sum is σ = 9112320. Its totient is φ = 975600.

The previous prime is 3220663. The next prime is 3220669. The reversal of 3220668 is 8660223.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (189840).

Almost surely, 2^3220668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4556160).

3220668 is an abundant number, since it is smaller than the sum of its proper divisors (5891652).

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

3220668 is a wasteful number, since it uses less digits than its factorization.

3220668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 3220668 is about 1794.6219657633. The cubic root of 3220668 is about 147.6778358717.

The spelling of 3220668 in words is "three million, two hundred twenty thousand, six hundred sixty-eight".