12896565 has 32 divisors (see below), whose sum is σ = 23003136. Its totient is φ = 6116160.

The previous prime is 12896519. The next prime is 12896579. The reversal of 12896565 is 56569821.

It is not a de Polignac number, because 12896565 - 2⁶ = 12896501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6924 + ... + 8586.

It is an arithmetic number, because the mean of its divisors is an integer number (718848).

Almost surely, 2^12896565 is an apocalyptic number.

12896565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12896565 is a deficient number, since it is larger than the sum of its proper divisors (10106571).

12896565 is a wasteful number, since it uses less digits than its factorization.

12896565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its digits is 129600, while the sum is 42.

The square root of 12896565 is about 3591.1787758339. The cubic root of 12896565 is about 234.5081913175.

The spelling of 12896565 in words is "twelve million, eight hundred ninety-six thousand, five hundred sixty-five".