2201668 has 36 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 919632.

The previous prime is 2201627. The next prime is 2201669. The reversal of 2201668 is 8661022.

It is not an unprimeable number, because it can be changed into a prime (2201669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9093 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^2201668 is an apocalyptic number.

2201668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2201668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

2201668 is an abundant number, since it is smaller than the sum of its proper divisors (2394812).

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

2201668 is a wasteful number, since it uses less digits than its factorization.

2201668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2201668 is about 1483.8018735667. The cubic root of 2201668 is about 130.0920058745.

The spelling of 2201668 in words is "two million, two hundred one thousand, six hundred sixty-eight".