2243669 has 2 divisors, whose sum is σ = 2243670. Its totient is φ = 2243668.

The previous prime is 2243663. The next prime is 2243693. The reversal of 2243669 is 9663422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 743044 = 1225^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243669 - 2¹⁶ = 2178133 is a prime.

It is a super-2 number, since 2×2243669² = 10068101163122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121834 + 1121835.

It is an arithmetic number, because the mean of its divisors is an integer number (1121835).

2^2243669 is an apocalyptic number.

It is an amenable number.

2243669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243669 is an equidigital number, since it uses as much as digits as its factorization.

2243669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 2243669 is about 1497.8881800722. Note that the first 3 decimals coincide. The cubic root of 2243669 is about 130.9140511910.

The spelling of 2243669 in words is "two million, two hundred forty-three thousand, six hundred sixty-nine".