12746709 has 12 divisors (see below), whose sum is σ = 18481996. Its totient is φ = 8465472.

The previous prime is 12746687. The next prime is 12746711. The reversal of 12746709 is 90764721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 864900 + 11881809 = 930^2 + 3447^2 .

It is not a de Polignac number, because 12746709 - 2⁵ = 12746677 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 (12746779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64 + ... + 5049.

Almost surely, 2^12746709 is an apocalyptic number.

It is an amenable number.

12746709 is a deficient number, since it is larger than the sum of its proper divisors (5735287).

12746709 is a wasteful number, since it uses less digits than its factorization.

12746709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396 (or 5393 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12746709 is about 3570.2533523547. The cubic root of 12746709 is about 233.5963345132.

The spelling of 12746709 in words is "twelve million, seven hundred forty-six thousand, seven hundred nine".