2168168 has 8 divisors (see below), whose sum is σ = 4065330. Its totient is φ = 1084080.

The previous prime is 2168149. The next prime is 2168183. The reversal of 2168168 is 8618612.

It can be written as a sum of positive squares in only one way, i.e., 2079364 + 88804 = 1442^2 + 298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135503 + ... + 135518.

2^2168168 is an apocalyptic number.

It is an amenable number.

2168168 is a deficient number, since it is larger than the sum of its proper divisors (1897162).

2168168 is a wasteful number, since it uses less digits than its factorization.

2168168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271027 (or 271023 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 2168168 is about 1472.4700336509. The cubic root of 2168168 is about 129.4288155462.

The spelling of 2168168 in words is "two million, one hundred sixty-eight thousand, one hundred sixty-eight".