2644219 has 2 divisors, whose sum is σ = 2644220. Its totient is φ = 2644218.

The previous prime is 2644183. The next prime is 2644247. The reversal of 2644219 is 9124462.

It is an a-pointer prime, because the next prime (2644247) can be obtained adding 2644219 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2644219 - 2⁷ = 2644091 is a prime.

It is a super-2 number, since 2×2644219² = 13983788239922, which contains 22 as substring.

It is a Chen prime.

2644219 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2644619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322109 + 1322110.

It is an arithmetic number, because the mean of its divisors is an integer number (1322110).

2^2644219 is an apocalyptic number.

2644219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644219 is an equidigital number, since it uses as much as digits as its factorization.

2644219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 2644219 is about 1626.1054701341. The cubic root of 2644219 is about 138.2820493437.

The spelling of 2644219 in words is "two million, six hundred forty-four thousand, two hundred nineteen".