12897964 has 6 divisors (see below), whose sum is σ = 22571444. Its totient is φ = 6448980.

The previous prime is 12897961. The next prime is 12897971. The reversal of 12897964 is 46979821.

12897964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12897961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612242 + ... + 1612249.

Almost surely, 2^12897964 is an apocalyptic number.

It is an amenable number.

12897964 is a deficient number, since it is larger than the sum of its proper divisors (9673480).

12897964 is a wasteful number, since it uses less digits than its factorization.

12897964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224495 (or 3224493 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 12897964 is about 3591.3735533915. The cubic root of 12897964 is about 234.5166707097.

It can be divided in two parts, 12897 and 964, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 12897964 in words is "twelve million, eight hundred ninety-seven thousand, nine hundred sixty-four".