12726897 has 16 divisors (see below), whose sum is σ = 18055872. Its totient is φ = 7946240.

The previous prime is 12726869. The next prime is 12726907. The reversal of 12726897 is 79862721.

It is a cyclic number.

It is not a de Polignac number, because 12726897 - 2⁸ = 12726641 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12726817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12622 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (1128492).

Almost surely, 2^12726897 is an apocalyptic number.

12726897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12726897 is the 2913-rd pentagonal number.

It is an amenable number.

12726897 is a deficient number, since it is larger than the sum of its proper divisors (5328975).

12726897 is a wasteful number, since it uses less digits than its factorization.

12726897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its digits is 84672, while the sum is 42.

The square root of 12726897 is about 3567.4776803787. The cubic root of 12726897 is about 233.4752467773.

The spelling of 12726897 in words is "twelve million, seven hundred twenty-six thousand, eight hundred ninety-seven".