2201664 has 28 divisors (see below), whose sum is σ = 5825744. Its totient is φ = 733824.

The previous prime is 2201627. The next prime is 2201669. The reversal of 2201664 is 4661022.

It is a happy number.

2201664 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2201664.

It is not an unprimeable number, because it can be changed into a prime (2201669) 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, 5542 + ... + 5925.

2^2201664 is an apocalyptic number.

2201664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2201664 is an abundant number, since it is smaller than the sum of its proper divisors (3624080).

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

2201664 is a wasteful number, since it uses less digits than its factorization.

2201664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11482 (or 11472 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2201664 is about 1483.8005256772. The cubic root of 2201664 is about 130.0919270906.

Adding to 2201664 its reverse (4661022), we get a palindrome (6862686).

The spelling of 2201664 in words is "two million, two hundred one thousand, six hundred sixty-four".