6765636491 has 2 divisors, whose sum is σ = 6765636492. Its totient is φ = 6765636490.

The previous prime is 6765636487. The next prime is 6765636497. The reversal of 6765636491 is 1946365676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6765636491 - 2² = 6765636487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6765636497) 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, 3382818245 + 3382818246.

It is an arithmetic number, because the mean of its divisors is an integer number (3382818246).

Almost surely, 2^6765636491 is an apocalyptic number.

6765636491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6765636491 is an equidigital number, since it uses as much as digits as its factorization.

6765636491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The square root of 6765636491 is about 82253.4892329803. The cubic root of 6765636491 is about 1891.3397638300.

The spelling of 6765636491 in words is "six billion, seven hundred sixty-five million, six hundred thirty-six thousand, four hundred ninety-one".