12645273 has 4 divisors (see below), whose sum is σ = 16860368. Its totient is φ = 8430180.

The previous prime is 12645271. The next prime is 12645277. The reversal of 12645273 is 37254621.

12645273 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12645273 - 2¹ = 12645271 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 12645273.

It is not an unprimeable number, because it can be changed into a prime (12645271) 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, 2107543 + ... + 2107548.

It is an arithmetic number, because the mean of its divisors is an integer number (4215092).

Almost surely, 2^12645273 is an apocalyptic number.

It is an amenable number.

12645273 is a deficient number, since it is larger than the sum of its proper divisors (4215095).

12645273 is an equidigital number, since it uses as much as digits as its factorization.

12645273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215094.

The product of its digits is 10080, while the sum is 30.

The square root of 12645273 is about 3556.0192631649. The cubic root of 12645273 is about 232.9750444516.

Adding to 12645273 its reverse (37254621), we get a palindrome (49899894).

The spelling of 12645273 in words is "twelve million, six hundred forty-five thousand, two hundred seventy-three".