2175680 has 56 divisors (see below), whose sum is σ = 5590032. Its totient is φ = 801792.

The previous prime is 2175661. The next prime is 2175683. The reversal of 2175680 is 865712.

It is not an unprimeable number, because it can be changed into a prime (2175683) 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 7 ways as a sum of consecutive naturals, for example, 3899 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (99822).

2^2175680 is an apocalyptic number.

2175680 is a gapful number since it is divisible by the number (20) 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 2175680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2795016).

2175680 is an abundant number, since it is smaller than the sum of its proper divisors (3414352).

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

2175680 is a wasteful number, since it uses less digits than its factorization.

2175680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2175680 is about 1475.0186439500. The cubic root of 2175680 is about 129.5781195597.

The spelling of 2175680 in words is "two million, one hundred seventy-five thousand, six hundred eighty".