12968387 has 4 divisors (see below), whose sum is σ = 12976920. Its totient is φ = 12959856.

The previous prime is 12968383. The next prime is 12968401. The reversal of 12968387 is 78386921.

12968387 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78386921 = 23 ⋅3408127.

It is a cyclic number.

It is not a de Polignac number, because 12968387 - 2² = 12968383 is a prime.

It is a super-2 number, since 2×12968387² = 336358122763538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12968383) 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, 1298 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (3244230).

Almost surely, 2^12968387 is an apocalyptic number.

12968387 is a deficient number, since it is larger than the sum of its proper divisors (8533).

12968387 is an equidigital number, since it uses as much as digits as its factorization.

12968387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532.

The product of its digits is 145152, while the sum is 44.

The square root of 12968387 is about 3601.1646727135. The cubic root of 12968387 is about 234.9427172891.

The spelling of 12968387 in words is "twelve million, nine hundred sixty-eight thousand, three hundred eighty-seven".