12705347 has 4 divisors (see below), whose sum is σ = 12716376. Its totient is φ = 12694320.

The previous prime is 12705323. The next prime is 12705349. The reversal of 12705347 is 74350721.

12705347 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12705347 - 2¹⁰ = 12704323 is a prime.

It is a super-2 number, since 2×12705347² = 322851684780818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12705349) 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, 3554 + ... + 6167.

It is an arithmetic number, because the mean of its divisors is an integer number (3179094).

Almost surely, 2^12705347 is an apocalyptic number.

12705347 is a deficient number, since it is larger than the sum of its proper divisors (11029).

12705347 is an equidigital number, since it uses as much as digits as its factorization.

12705347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11028.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 12705347 is about 3564.4560594851. The cubic root of 12705347 is about 233.3433938973.

The spelling of 12705347 in words is "twelve million, seven hundred five thousand, three hundred forty-seven".