2216629 has 2 divisors, whose sum is σ = 2216630. Its totient is φ = 2216628.

The previous prime is 2216611. The next prime is 2216653. The reversal of 2216629 is 9266122.

2216629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 603729 = 1270^2 + 777^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216629 - 2⁹ = 2216117 is a prime.

It is a Chen prime.

It is an Ulam number.

2216629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2216597 and 2216606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216609) 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 as a sum of consecutive naturals, namely, 1108314 + 1108315.

It is an arithmetic number, because the mean of its divisors is an integer number (1108315).

2^2216629 is an apocalyptic number.

It is an amenable number.

2216629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216629 is an equidigital number, since it uses as much as digits as its factorization.

2216629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 2216629 is about 1488.8347792821. The cubic root of 2216629 is about 130.3860124319.

The spelling of 2216629 in words is "two million, two hundred sixteen thousand, six hundred twenty-nine".