12704247 has 6 divisors (see below), whose sum is σ = 18350592. Its totient is φ = 8469492.

The previous prime is 12704239. The next prime is 12704261. The reversal of 12704247 is 74240721.

It is a happy number.

It is not a de Polignac number, because 12704247 - 2³ = 12704239 is a prime.

It is a super-2 number, since 2×12704247² = 322795783674018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12704247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12704267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705783 + ... + 705800.

It is an arithmetic number, because the mean of its divisors is an integer number (3058432).

Almost surely, 2^12704247 is an apocalyptic number.

12704247 is a deficient number, since it is larger than the sum of its proper divisors (5646345).

12704247 is a wasteful number, since it uses less digits than its factorization.

12704247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411589 (or 1411586 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 12704247 is about 3564.3017549024. The cubic root of 12704247 is about 233.3366595898.

Adding to 12704247 its reverse (74240721), we get a palindrome (86944968).

The spelling of 12704247 in words is "twelve million, seven hundred four thousand, two hundred forty-seven".