2220065 has 8 divisors (see below), whose sum is σ = 2750208. Its totient is φ = 1718640.

The previous prime is 2220059. The next prime is 2220073. The reversal of 2220065 is 5600222.

2220065 = 34² + 35² + ... + 188².

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

It is a de Polignac number, because none of the positive numbers 2^k-2220065 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 7007 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (343776).

2^2220065 is an apocalyptic number.

It is an amenable number.

2220065 is a deficient number, since it is larger than the sum of its proper divisors (530143).

2220065 is a wasteful number, since it uses less digits than its factorization.

2220065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14359.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2220065 is about 1489.9882549873. The cubic root of 2220065 is about 130.4533481705.

Adding to 2220065 its reverse (5600222), we get a palindrome (7820287).

The spelling of 2220065 in words is "two million, two hundred twenty thousand, sixty-five".