12956897 has 4 divisors (see below), whose sum is σ = 13012740. Its totient is φ = 12901056.

The previous prime is 12956863. The next prime is 12956903. The reversal of 12956897 is 79865921.

12956897 is digitally balanced in base 2 and base 3, because in such bases 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 an emirpimes, since its reverse is a distinct semiprime: 79865921 = 43 ⋅1857347.

It can be written as a sum of positive squares in 2 ways, for example, as 2819041 + 10137856 = 1679^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 12956897 - 2⁸ = 12956641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12956837) 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, 27572 + ... + 28037.

It is an arithmetic number, because the mean of its divisors is an integer number (3253185).

Almost surely, 2^12956897 is an apocalyptic number.

It is an amenable number.

12956897 is a deficient number, since it is larger than the sum of its proper divisors (55843).

12956897 is an equidigital number, since it uses as much as digits as its factorization.

12956897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55842.

The product of its digits is 272160, while the sum is 47.

The square root of 12956897 is about 3599.5690019779. The cubic root of 12956897 is about 234.8733103159.

It can be divided in two parts, 1295 and 6897, that added together give a 13-th power (8192 = 2¹³).

The spelling of 12956897 in words is "twelve million, nine hundred fifty-six thousand, eight hundred ninety-seven".