2168608 has 36 divisors (see below), whose sum is σ = 4634658. Its totient is φ = 998400.

The previous prime is 2168599. The next prime is 2168609. The reversal of 2168608 is 8068612.

It can be written as a sum of positive squares in 3 ways, for example, as 1774224 + 394384 = 1332^2 + 628^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2168608.

It is not an unprimeable number, because it can be changed into a prime (2168609) 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 5 ways as a sum of consecutive naturals, for example, 5208 + ... + 5608.

2^2168608 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 2168608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2317329).

2168608 is an abundant number, since it is smaller than the sum of its proper divisors (2466050).

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

2168608 is a wasteful number, since it uses less digits than its factorization.

2168608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2168608 is about 1472.6194348847. The cubic root of 2168608 is about 129.4375702225.

The spelling of 2168608 in words is "two million, one hundred sixty-eight thousand, six hundred eight".