6767656481 has 2 divisors, whose sum is σ = 6767656482. Its totient is φ = 6767656480.

The previous prime is 6767656471. The next prime is 6767656541. The reversal of 6767656481 is 1846567676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3400755856 + 3366900625 = 58316^2 + 58025^2 .

It is a cyclic number.

It is not a de Polignac number, because 6767656481 - 2²⁶ = 6700547617 is a prime.

It is a super-2 number, since 2×6767656481² = 91602348489642606722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6767656471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383828240 + 3383828241.

It is an arithmetic number, because the mean of its divisors is an integer number (3383828241).

Almost surely, 2^6767656481 is an apocalyptic number.

It is an amenable number.

6767656481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6767656481 is an equidigital number, since it uses as much as digits as its factorization.

6767656481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 56.

The square root of 6767656481 is about 82265.7673701522. The cubic root of 6767656481 is about 1891.5279751070.

The spelling of 6767656481 in words is "six billion, seven hundred sixty-seven million, six hundred fifty-six thousand, four hundred eighty-one".