12697617 has 4 divisors (see below), whose sum is σ = 16930160. Its totient is φ = 8465076.

The previous prime is 12697609. The next prime is 12697627. The reversal of 12697617 is 71679621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12697617 - 2³ = 12697609 is a prime.

It is a super-2 number, since 2×12697617² = 322458954957378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12697627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116267 + ... + 2116272.

It is an arithmetic number, because the mean of its divisors is an integer number (4232540).

Almost surely, 2^12697617 is an apocalyptic number.

It is an amenable number.

12697617 is a deficient number, since it is larger than the sum of its proper divisors (4232543).

12697617 is an equidigital number, since it uses as much as digits as its factorization.

12697617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232542.

The product of its digits is 31752, while the sum is 39.

The square root of 12697617 is about 3563.3715775933. The cubic root of 12697617 is about 233.2960618472.

The spelling of 12697617 in words is "twelve million, six hundred ninety-seven thousand, six hundred seventeen".