2216663 has 4 divisors (see below), whose sum is σ = 2238288. Its totient is φ = 2195040.

The previous prime is 2216659. The next prime is 2216699. The reversal of 2216663 is 3666122.

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

It is a cyclic number.

It is not a de Polignac number, because 2216663 - 2² = 2216659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216603) 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, 10658 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (559572).

2^2216663 is an apocalyptic number.

2216663 is a deficient number, since it is larger than the sum of its proper divisors (21625).

2216663 is a wasteful number, since it uses less digits than its factorization.

2216663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21624.

The product of its digits is 2592, while the sum is 26.

The square root of 2216663 is about 1488.8461975637. The cubic root of 2216663 is about 130.3866790751.

The spelling of 2216663 in words is "two million, two hundred sixteen thousand, six hundred sixty-three".