12897575 has 12 divisors (see below), whose sum is σ = 16384368. Its totient is φ = 10065600.

The previous prime is 12897569. The next prime is 12897583. The reversal of 12897575 is 57579821.

12897575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12897575 - 2⁴ = 12897559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5267 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (1365364).

Almost surely, 2^12897575 is an apocalyptic number.

12897575 is a deficient number, since it is larger than the sum of its proper divisors (3486793).

12897575 is a wasteful number, since it uses less digits than its factorization.

12897575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12634 (or 12629 counting only the distinct ones).

The product of its digits is 176400, while the sum is 44.

The square root of 12897575 is about 3591.3193954312. The cubic root of 12897575 is about 234.5143130275.

The spelling of 12897575 in words is "twelve million, eight hundred ninety-seven thousand, five hundred seventy-five".