2688161 has 16 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 2198016.

The previous prime is 2688143. The next prime is 2688167. The reversal of 2688161 is 1618862.

It is a cyclic number.

It is not a de Polignac number, because 2688161 - 2¹⁴ = 2671777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2688167) 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 15 ways as a sum of consecutive naturals, for example, 25070 + ... + 25176.

It is an arithmetic number, because the mean of its divisors is an integer number (201096).

2^2688161 is an apocalyptic number.

It is an amenable number.

2688161 is a deficient number, since it is larger than the sum of its proper divisors (529375).

2688161 is a wasteful number, since it uses less digits than its factorization.

2688161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

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

The square root of 2688161 is about 1639.5612217908. The cubic root of 2688161 is about 139.0438417335.

The spelling of 2688161 in words is "two million, six hundred eighty-eight thousand, one hundred sixty-one".