12645274 has 4 divisors (see below), whose sum is σ = 18967914. Its totient is φ = 6322636.

The previous prime is 12645271. The next prime is 12645277. The reversal of 12645274 is 47254621.

12645274 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.

It is an interprime number because it is at equal distance from previous prime (12645271) and next prime (12645277).

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 5489649 = 2675^2 + 2343^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 3161317 + ... + 3161320.

Almost surely, 2^12645274 is an apocalyptic number.

12645274 is a deficient number, since it is larger than the sum of its proper divisors (6322640).

12645274 is an equidigital number, since it uses as much as digits as its factorization.

12645274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322639.

The product of its digits is 13440, while the sum is 31.

The square root of 12645274 is about 3556.0194037716. The cubic root of 12645274 is about 232.9750505929.

Adding to 12645274 its reverse (47254621), we get a palindrome (59899895).

The spelling of 12645274 in words is "twelve million, six hundred forty-five thousand, two hundred seventy-four".