2216623 has 4 divisors (see below), whose sum is σ = 2220400. Its totient is φ = 2212848.

The previous prime is 2216611. The next prime is 2216629. The reversal of 2216623 is 3266122.

It is a happy number.

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 2216623 - 2¹³ = 2208431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2216594 and 2216603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216629) 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, 798 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (555100).

2^2216623 is an apocalyptic number.

2216623 is a deficient number, since it is larger than the sum of its proper divisors (3777).

2216623 is an equidigital number, since it uses as much as digits as its factorization.

2216623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3776.

The product of its digits is 864, while the sum is 22.

The square root of 2216623 is about 1488.8327642821. The cubic root of 2216623 is about 130.3858947883.

The spelling of 2216623 in words is "two million, two hundred sixteen thousand, six hundred twenty-three".