2180005 has 8 divisors (see below), whose sum is σ = 2649600. Its totient is φ = 1721616.

The previous prime is 2179997. The next prime is 2180021. The reversal of 2180005 is 5000812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2180005 - 2³ = 2179997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (331200).

2^2180005 is an apocalyptic number.

It is an amenable number.

2180005 is a deficient number, since it is larger than the sum of its proper divisors (469595).

2180005 is an equidigital number, since it uses as much as digits as its factorization.

2180005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2180005 is about 1476.4839992360. The cubic root of 2180005 is about 129.6639248287.

Adding to 2180005 its reverse (5000812), we get a palindrome (7180817).

The spelling of 2180005 in words is "two million, one hundred eighty thousand, five".