12966697 has 4 divisors (see below), whose sum is σ = 12975300. Its totient is φ = 12958096.

The previous prime is 12966661. The next prime is 12966703. The reversal of 12966697 is 79666921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79666921 = 113 ⋅705017.

It can be written as a sum of positive squares in 2 ways, for example, as 4562496 + 8404201 = 2136^2 + 2899^2 .

It is a cyclic number.

It is not a de Polignac number, because 12966697 - 2¹⁵ = 12933929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12966617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (3243825).

Almost surely, 2^12966697 is an apocalyptic number.

It is an amenable number.

12966697 is a deficient number, since it is larger than the sum of its proper divisors (8603).

12966697 is an equidigital number, since it uses as much as digits as its factorization.

12966697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602.

The product of its digits is 244944, while the sum is 46.

The square root of 12966697 is about 3600.9300187590. The cubic root of 12966697 is about 234.9325111768.

The spelling of 12966697 in words is "twelve million, nine hundred sixty-six thousand, six hundred ninety-seven".