12897995 has 12 divisors (see below), whose sum is σ = 17013360. Its totient is φ = 9379920.

The previous prime is 12897971. The next prime is 12898007. The reversal of 12897995 is 59979821.

It is a happy number.

It is not a de Polignac number, because 12897995 - 2¹² = 12893899 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10055 + ... + 11264.

It is an arithmetic number, because the mean of its divisors is an integer number (1417780).

Almost surely, 2^12897995 is an apocalyptic number.

12897995 is a deficient number, since it is larger than the sum of its proper divisors (4115365).

12897995 is a wasteful number, since it uses less digits than its factorization.

12897995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346 (or 21335 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 12897995 is about 3591.3778692864. The cubic root of 12897995 is about 234.5168585949.

The spelling of 12897995 in words is "twelve million, eight hundred ninety-seven thousand, nine hundred ninety-five".