2217385 has 8 divisors (see below), whose sum is σ = 2672136. Its totient is φ = 1766400.

The previous prime is 2217379. The next prime is 2217409. The reversal of 2217385 is 5837122.

2217385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 529984 + 1687401 = 728^2 + 1299^2 .

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

It is not a de Polignac number, because 2217385 - 2⁹ = 2216873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (334017).

2^2217385 is an apocalyptic number.

It is an amenable number.

2217385 is a deficient number, since it is larger than the sum of its proper divisors (454751).

2217385 is a wasteful number, since it uses less digits than its factorization.

2217385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883.

The product of its digits is 3360, while the sum is 28.

The square root of 2217385 is about 1489.0886474619. The cubic root of 2217385 is about 130.4008338298.

The spelling of 2217385 in words is "two million, two hundred seventeen thousand, three hundred eighty-five".