2216658 has 16 divisors (see below), whose sum is σ = 4469760. Its totient is φ = 732816.

The previous prime is 2216657. The next prime is 2216659. The reversal of 2216658 is 8566122.

It is an interprime number because it is at equal distance from previous prime (2216657) and next prime (2216659).

It is a d-powerful number, because it can be written as 2⁸ + 2¹⁹ + 1 + 6⁵ + 6⁸ + 5⁴ + 8⁴ .

It is not an unprimeable number, because it can be changed into a prime (2216653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (279360).

2^2216658 is an apocalyptic number.

2216658 is an abundant number, since it is smaller than the sum of its proper divisors (2253102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2216658 is a wasteful number, since it uses less digits than its factorization.

2216658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041.

The product of its digits is 5760, while the sum is 30.

The square root of 2216658 is about 1488.8445184102. The cubic root of 2216658 is about 130.3865810398.

The spelling of 2216658 in words is "two million, two hundred sixteen thousand, six hundred fifty-eight".