12711647 has 4 divisors (see below), whose sum is σ = 13689480. Its totient is φ = 11733816.

The previous prime is 12711619. The next prime is 12711649. The reversal of 12711647 is 74611721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12711647 - 2¹⁶ = 12646111 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 (12711649) 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, 488897 + ... + 488922.

It is an arithmetic number, because the mean of its divisors is an integer number (3422370).

Almost surely, 2^12711647 is an apocalyptic number.

12711647 is a deficient number, since it is larger than the sum of its proper divisors (977833).

12711647 is an equidigital number, since it uses as much as digits as its factorization.

12711647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977832.

The product of its digits is 2352, while the sum is 29.

The square root of 12711647 is about 3565.3396752624. The cubic root of 12711647 is about 233.3819556270.

The spelling of 12711647 in words is "twelve million, seven hundred eleven thousand, six hundred forty-seven".