6866426447 has 2 divisors, whose sum is σ = 6866426448. Its totient is φ = 6866426446.

The previous prime is 6866426419. The next prime is 6866426467. The reversal of 6866426447 is 7446246686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6866426447 - 2¹² = 6866422351 is a prime.

It is a super-2 number, since 2×6866426447² = 94295624304122087618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6866426467) 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, 3433213223 + 3433213224.

It is an arithmetic number, because the mean of its divisors is an integer number (3433213224).

Almost surely, 2^6866426447 is an apocalyptic number.

6866426447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6866426447 is an equidigital number, since it uses as much as digits as its factorization.

6866426447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 53.

The square root of 6866426447 is about 82863.9031605439. The cubic root of 6866426447 is about 1900.6854818404.

The spelling of 6866426447 in words is "six billion, eight hundred sixty-six million, four hundred twenty-six thousand, four hundred forty-seven".