12696401 has 4 divisors (see below), whose sum is σ = 12724404. Its totient is φ = 12668400.

The previous prime is 12696377. The next prime is 12696413. The reversal of 12696401 is 10469621.

12696401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4579600 + 8116801 = 2140^2 + 2849^2 .

It is a cyclic number.

It is not a de Polignac number, because 12696401 - 2¹⁰ = 12695377 is a prime.

It is a super-2 number, since 2×12696401² = 322397196705602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12696451) 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, 13310 + ... + 14231.

It is an arithmetic number, because the mean of its divisors is an integer number (3181101).

Almost surely, 2^12696401 is an apocalyptic number.

It is an amenable number.

12696401 is a deficient number, since it is larger than the sum of its proper divisors (28003).

12696401 is an equidigital number, since it uses as much as digits as its factorization.

12696401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28002.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12696401 is about 3563.2009485854. The cubic root of 12696401 is about 233.2886143325.

The spelling of 12696401 in words is "twelve million, six hundred ninety-six thousand, four hundred one".