12678619 has 2 divisors, whose sum is σ = 12678620. Its totient is φ = 12678618.

The previous prime is 12678577. The next prime is 12678623. The reversal of 12678619 is 91687621.

It is a strong prime.

It is an emirp because it is prime and its reverse (91687621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12678619 - 2¹¹ = 12676571 is a prime.

It is a super-2 number, since 2×12678619² = 321494759494322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12678649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6339309 + 6339310.

It is an arithmetic number, because the mean of its divisors is an integer number (6339310).

Almost surely, 2^12678619 is an apocalyptic number.

12678619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12678619 is an equidigital number, since it uses as much as digits as its factorization.

12678619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 12678619 is about 3560.7048459540. The cubic root of 12678619 is about 233.1796523176.

The spelling of 12678619 in words is "twelve million, six hundred seventy-eight thousand, six hundred nineteen".