12646769 has 2 divisors, whose sum is σ = 12646770. Its totient is φ = 12646768.

The previous prime is 12646747. The next prime is 12646771. The reversal of 12646769 is 96764621.

12646769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 150544 = 3535^2 + 388^2 .

It is an emirp because it is prime and its reverse (96764621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12646769 is a prime.

It is a super-2 number, since 2×12646769² = 319881532278722, which contains 22 as substring.

Together with 12646771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12646369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323384 + 6323385.

It is an arithmetic number, because the mean of its divisors is an integer number (6323385).

Almost surely, 2^12646769 is an apocalyptic number.

It is an amenable number.

12646769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12646769 is an equidigital number, since it uses as much as digits as its factorization.

12646769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 12646769 is about 3556.2296045109. The cubic root of 12646769 is about 232.9842314662.

The spelling of 12646769 in words is "twelve million, six hundred forty-six thousand, seven hundred sixty-nine".