12687897 has 8 divisors (see below), whose sum is σ = 17463040. Its totient is φ = 8185680.

The previous prime is 12687889. The next prime is 12687943. The reversal of 12687897 is 79878621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12687897 - 2³ = 12687889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12687847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68122 + ... + 68307.

It is an arithmetic number, because the mean of its divisors is an integer number (2182880).

Almost surely, 2^12687897 is an apocalyptic number.

It is an amenable number.

12687897 is a deficient number, since it is larger than the sum of its proper divisors (4775143).

12687897 is a wasteful number, since it uses less digits than its factorization.

12687897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136463.

The product of its digits is 338688, while the sum is 48.

The square root of 12687897 is about 3562.0074396329. The cubic root of 12687897 is about 233.2365174306.

The spelling of 12687897 in words is "twelve million, six hundred eighty-seven thousand, eight hundred ninety-seven".