12706819 has 2 divisors, whose sum is σ = 12706820. Its totient is φ = 12706818.

The previous prime is 12706817. The next prime is 12706829. The reversal of 12706819 is 91860721.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91860721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12706819 - 2¹ = 12706817 is a prime.

It is a super-2 number, since 2×12706819² = 322926498197522, which contains 22 as substring.

Together with 12706817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12706817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6353409 + 6353410.

It is an arithmetic number, because the mean of its divisors is an integer number (6353410).

Almost surely, 2^12706819 is an apocalyptic number.

12706819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12706819 is an equidigital number, since it uses as much as digits as its factorization.

12706819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12706819 is about 3564.6625366225. The cubic root of 12706819 is about 233.3524050171.

The spelling of 12706819 in words is "twelve million, seven hundred six thousand, eight hundred nineteen".