6864198427 has 2 divisors, whose sum is σ = 6864198428. Its totient is φ = 6864198426.

The previous prime is 6864198401. The next prime is 6864198431. The reversal of 6864198427 is 7248914686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6864198427 is a prime.

It is not a weakly prime, because it can be changed into another prime (6864198127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432099213 + 3432099214.

It is an arithmetic number, because the mean of its divisors is an integer number (3432099214).

Almost surely, 2^6864198427 is an apocalyptic number.

6864198427 is a deficient number, since it is larger than the sum of its proper divisors (1).

6864198427 is an equidigital number, since it uses as much as digits as its factorization.

6864198427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 55.

The square root of 6864198427 is about 82850.4582184070. The cubic root of 6864198427 is about 1900.4798812797.

The spelling of 6864198427 in words is "six billion, eight hundred sixty-four million, one hundred ninety-eight thousand, four hundred twenty-seven".