6681716467 has 2 divisors, whose sum is σ = 6681716468. Its totient is φ = 6681716466.

The previous prime is 6681716441. The next prime is 6681716473. The reversal of 6681716467 is 7646171866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6681716467 - 2³¹ = 4534232819 is a prime.

It is not a weakly prime, because it can be changed into another prime (6681716497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340858233 + 3340858234.

It is an arithmetic number, because the mean of its divisors is an integer number (3340858234).

Almost surely, 2^6681716467 is an apocalyptic number.

6681716467 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681716467 is an equidigital number, since it uses as much as digits as its factorization.

6681716467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 6681716467 is about 81741.7669676892. The cubic root of 6681716467 is about 1883.4872338239.

The spelling of 6681716467 in words is "six billion, six hundred eighty-one million, seven hundred sixteen thousand, four hundred sixty-seven".