2216859 has 4 divisors (see below), whose sum is σ = 2955816. Its totient is φ = 1477904.

The previous prime is 2216857. The next prime is 2216861. The reversal of 2216859 is 9586122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2216857) and next prime (2216861).

It is a cyclic number.

It is not a de Polignac number, because 2216859 - 2¹ = 2216857 is a prime.

It is a super-3 number, since 3×2216859³ = 32684020087736183337, which contains 333 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2216857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369474 + ... + 369479.

It is an arithmetic number, because the mean of its divisors is an integer number (738954).

2^2216859 is an apocalyptic number.

2216859 is a deficient number, since it is larger than the sum of its proper divisors (738957).

2216859 is an equidigital number, since it uses as much as digits as its factorization.

2216859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738956.

The product of its digits is 8640, while the sum is 33.

The square root of 2216859 is about 1488.9120188916. The cubic root of 2216859 is about 130.3905219440.

The spelling of 2216859 in words is "two million, two hundred sixteen thousand, eight hundred fifty-nine".