2268689 has 4 divisors (see below), whose sum is σ = 2271780. Its totient is φ = 2265600.

The previous prime is 2268677. The next prime is 2268691. The reversal of 2268689 is 9868622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9868622 = 2 ⋅4934311.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 1918225 = 592^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2268689 - 2¹² = 2264593 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 2¹⁶ + 6³ + 8² + 6⁶ + 8⁷ + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2268649) 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, 257 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (567945).

2^2268689 is an apocalyptic number.

It is an amenable number.

2268689 is a deficient number, since it is larger than the sum of its proper divisors (3091).

2268689 is a wasteful number, since it uses less digits than its factorization.

2268689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090.

The product of its digits is 82944, while the sum is 41.

The square root of 2268689 is about 1506.2167838661. The cubic root of 2268689 is about 131.3988774734.

The spelling of 2268689 in words is "two million, two hundred sixty-eight thousand, six hundred eighty-nine".