12670709 has 6 divisors (see below), whose sum is σ = 13127490. Its totient is φ = 12215280.

The previous prime is 12670703. The next prime is 12670711. The reversal of 12670709 is 90707621.

It can be written as a sum of positive squares in 3 ways, for example, as 5499025 + 7171684 = 2345^2 + 2678^2 .

It is not a de Polignac number, because 12670709 - 2⁸ = 12670453 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 (12670703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18839 + ... + 19499.

It is an arithmetic number, because the mean of its divisors is an integer number (2187915).

Almost surely, 2^12670709 is an apocalyptic number.

It is an amenable number.

12670709 is a deficient number, since it is larger than the sum of its proper divisors (456781).

12670709 is an frugal number, since it uses more digits than its factorization.

12670709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 12670709 is about 3559.5939375159. The cubic root of 12670709 is about 233.1311498017.

The spelling of 12670709 in words is "twelve million, six hundred seventy thousand, seven hundred nine".