12273865 has 4 divisors (see below), whose sum is σ = 14728644. Its totient is φ = 9819088.

The previous prime is 12273803. The next prime is 12273869. The reversal of 12273865 is 56837221.

It is a happy number.

12273865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56837221 = 7 ⋅8119603.

It can be written as a sum of positive squares in 2 ways, for example, as 1750329 + 10523536 = 1323^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 12273865 - 2⁹ = 12273353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12273865.

It is not an unprimeable number, because it can be changed into a prime (12273869) 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, 1227382 + ... + 1227391.

It is an arithmetic number, because the mean of its divisors is an integer number (3682161).

Almost surely, 2^12273865 is an apocalyptic number.

It is an amenable number.

12273865 is a deficient number, since it is larger than the sum of its proper divisors (2454779).

12273865 is an equidigital number, since it uses as much as digits as its factorization.

12273865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454778.

The product of its digits is 20160, while the sum is 34.

The square root of 12273865 is about 3503.4076268684. The cubic root of 12273865 is about 230.6714155396.

The spelling of 12273865 in words is "twelve million, two hundred seventy-three thousand, eight hundred sixty-five".