12971705 has 8 divisors (see below), whose sum is σ = 15635400. Its totient is φ = 10331136.

The previous prime is 12971683. The next prime is 12971743. The reversal of 12971705 is 50717921.

12971705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3055504 + 9916201 = 1748^2 + 3149^2 .

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 12971705 - 2⁶ = 12971641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (1954425).

Almost surely, 2^12971705 is an apocalyptic number.

It is an amenable number.

12971705 is a deficient number, since it is larger than the sum of its proper divisors (2663695).

12971705 is a wasteful number, since it uses less digits than its factorization.

12971705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 12971705 is about 3601.6253275431. The cubic root of 12971705 is about 234.9627525091.

The spelling of 12971705 in words is "twelve million, nine hundred seventy-one thousand, seven hundred five".