12673649 has 2 divisors, whose sum is σ = 12673650. Its totient is φ = 12673648.

The previous prime is 12673607. The next prime is 12673651. The reversal of 12673649 is 94637621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 49 = 3560^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 12673649 - 2⁸ = 12673393 is a prime.

Together with 12673651, 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 (12673669) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6336824 + 6336825.

It is an arithmetic number, because the mean of its divisors is an integer number (6336825).

Almost surely, 2^12673649 is an apocalyptic number.

It is an amenable number.

12673649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12673649 is an equidigital number, since it uses as much as digits as its factorization.

12673649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 12673649 is about 3560.0068820158. The cubic root of 12673649 is about 233.1491796419.

It can be divided in two parts, 126736 and 49, that multiplied together give a square (6210064 = 2492²).

The spelling of 12673649 in words is "twelve million, six hundred seventy-three thousand, six hundred forty-nine".