2217859 has 8 divisors (see below), whose sum is σ = 2560608. Its totient is φ = 1881600.

The previous prime is 2217857. The next prime is 2217863. The reversal of 2217859 is 9587122.

2217859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2217859 - 2¹ = 2217857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2217857) by changing a digit.

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, 862 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (320076).

2^2217859 is an apocalyptic number.

2217859 is a deficient number, since it is larger than the sum of its proper divisors (342749).

2217859 is a wasteful number, since it uses less digits than its factorization.

2217859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245.

The product of its digits is 10080, while the sum is 34.

The square root of 2217859 is about 1489.2477967081. The cubic root of 2217859 is about 130.4101248929.

The spelling of 2217859 in words is "two million, two hundred seventeen thousand, eight hundred fifty-nine".