12675991 has 2 divisors, whose sum is σ = 12675992. Its totient is φ = 12675990.

The previous prime is 12675979. The next prime is 12676019. The reversal of 12675991 is 19957621.

12675991 = 1451² + 1452² + ... + 1456².

12675991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (19957621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12675991 - 2⁵ = 12675959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12675391) 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 as a sum of consecutive naturals, namely, 6337995 + 6337996.

It is an arithmetic number, because the mean of its divisors is an integer number (6337996).

Almost surely, 2^12675991 is an apocalyptic number.

12675991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12675991 is an equidigital number, since it uses as much as digits as its factorization.

12675991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 12675991 is about 3560.3357987695. The cubic root of 12675991 is about 233.1635401929.

The spelling of 12675991 in words is "twelve million, six hundred seventy-five thousand, nine hundred ninety-one".