12674639 has 4 divisors (see below), whose sum is σ = 13420224. Its totient is φ = 11929056.

The previous prime is 12674593. The next prime is 12674647. The reversal of 12674639 is 93647621.

12674639 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: 93647621 = 31 ⋅3020891.

It is a cyclic number.

It is not a de Polignac number, because 12674639 - 2⁸ = 12674383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12674659) 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, 372767 + ... + 372800.

It is an arithmetic number, because the mean of its divisors is an integer number (3355056).

Almost surely, 2^12674639 is an apocalyptic number.

12674639 is a deficient number, since it is larger than the sum of its proper divisors (745585).

12674639 is an equidigital number, since it uses as much as digits as its factorization.

12674639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745584.

The product of its digits is 54432, while the sum is 38.

The square root of 12674639 is about 3560.1459239756. The cubic root of 12674639 is about 233.1552502871.

The spelling of 12674639 in words is "twelve million, six hundred seventy-four thousand, six hundred thirty-nine".