2219623 has 4 divisors (see below), whose sum is σ = 2536720. Its totient is φ = 1902528.

The previous prime is 2219621. The next prime is 2219629. The reversal of 2219623 is 3269122.

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 2219623 - 2¹ = 2219621 is a prime.

It is a d-powerful number, because it can be written as 2 + 2⁷ + 1 + 9⁶ + 6⁸ + 2¹³ + 3⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158538 + ... + 158551.

It is an arithmetic number, because the mean of its divisors is an integer number (634180).

2^2219623 is an apocalyptic number.

2219623 is a deficient number, since it is larger than the sum of its proper divisors (317097).

2219623 is an equidigital number, since it uses as much as digits as its factorization.

2219623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317096.

The product of its digits is 1296, while the sum is 25.

The square root of 2219623 is about 1489.8399242872. The cubic root of 2219623 is about 130.4446901347. Note that the first 3 decimals are identical.

The spelling of 2219623 in words is "two million, two hundred nineteen thousand, six hundred twenty-three".