2688369 has 4 divisors (see below), whose sum is σ = 3584496. Its totient is φ = 1792244.

The previous prime is 2688349. The next prime is 2688373. The reversal of 2688369 is 9638862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2688369 - 2⁵ = 2688337 is a prime.

It is a super-2 number, since 2×2688369² = 14454655760322, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2688369.

It is not an unprimeable number, because it can be changed into a prime (2688349) 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, 448059 + ... + 448064.

It is an arithmetic number, because the mean of its divisors is an integer number (896124).

2^2688369 is an apocalyptic number.

It is an amenable number.

2688369 is a deficient number, since it is larger than the sum of its proper divisors (896127).

2688369 is an equidigital number, since it uses as much as digits as its factorization.

2688369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896126.

The product of its digits is 124416, while the sum is 42.

The square root of 2688369 is about 1639.6246521689. The cubic root of 2688369 is about 139.0474278745.

The spelling of 2688369 in words is "two million, six hundred eighty-eight thousand, three hundred sixty-nine".