12697271 has 4 divisors (see below), whose sum is σ = 12726000. Its totient is φ = 12668544.

The previous prime is 12697261. The next prime is 12697303. The reversal of 12697271 is 17279621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12697271 - 2⁶ = 12697207 is a prime.

It is a super-2 number, since 2×12697271² = 322441381694882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12697261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13691 + ... + 14588.

It is an arithmetic number, because the mean of its divisors is an integer number (3181500).

Almost surely, 2^12697271 is an apocalyptic number.

12697271 is a deficient number, since it is larger than the sum of its proper divisors (28729).

12697271 is an equidigital number, since it uses as much as digits as its factorization.

12697271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28728.

The product of its digits is 10584, while the sum is 35.

The square root of 12697271 is about 3563.3230277369. The cubic root of 12697271 is about 233.2939427837.

The spelling of 12697271 in words is "twelve million, six hundred ninety-seven thousand, two hundred seventy-one".