12739647 has 8 divisors (see below), whose sum is σ = 17985456. Its totient is φ = 7993472.

The previous prime is 12739637. The next prime is 12739651. The reversal of 12739647 is 74693721.

12739647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12739647 - 2¹⁰ = 12738623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124848 + ... + 124949.

It is an arithmetic number, because the mean of its divisors is an integer number (2248182).

Almost surely, 2^12739647 is an apocalyptic number.

12739647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12739647 is a deficient number, since it is larger than the sum of its proper divisors (5245809).

12739647 is a wasteful number, since it uses less digits than its factorization.

12739647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249817.

The product of its digits is 63504, while the sum is 39.

The square root of 12739647 is about 3569.2642098898. The cubic root of 12739647 is about 233.5531871131.

The spelling of 12739647 in words is "twelve million, seven hundred thirty-nine thousand, six hundred forty-seven".