6763644689 has 2 divisors, whose sum is σ = 6763644690. Its totient is φ = 6763644688.

The previous prime is 6763644673. The next prime is 6763644751. The reversal of 6763644689 is 9864463676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6596201089 + 167443600 = 81217^2 + 12940^2 .

It is a cyclic number.

It is not a de Polignac number, because 6763644689 - 2⁴ = 6763644673 is a prime.

It is not a weakly prime, because it can be changed into another prime (6763644889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3381822344 + 3381822345.

It is an arithmetic number, because the mean of its divisors is an integer number (3381822345).

Almost surely, 2^6763644689 is an apocalyptic number.

It is an amenable number.

6763644689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6763644689 is an equidigital number, since it uses as much as digits as its factorization.

6763644689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 59.

The square root of 6763644689 is about 82241.3806365141. The cubic root of 6763644689 is about 1891.1541422666.

The spelling of 6763644689 in words is "six billion, seven hundred sixty-three million, six hundred forty-four thousand, six hundred eighty-nine".