2168688 has 20 divisors (see below), whose sum is σ = 5602568. Its totient is φ = 722880.

The previous prime is 2168687. The next prime is 2168689. The reversal of 2168688 is 8868612.

It is an interprime number because it is at equal distance from previous prime (2168687) and next prime (2168689).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168687) 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, 22543 + ... + 22638.

2^2168688 is an apocalyptic number.

It is an amenable number.

2168688 is an abundant number, since it is smaller than the sum of its proper divisors (3433880).

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

2168688 is a wasteful number, since it uses less digits than its factorization.

2168688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45192 (or 45186 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 2168688 is about 1472.6465971169. The cubic root of 2168688 is about 129.4391618546.

The spelling of 2168688 in words is "two million, one hundred sixty-eight thousand, six hundred eighty-eight".