6769340644 has 18 divisors (see below), whose sum is σ = 13021191302. Its totient is φ = 3076972800.

The previous prime is 6769340621. The next prime is 6769340647. The reversal of 6769340644 is 4460439676.

It can be written as a sum of positive squares in only one way, i.e., 3754012900 + 3015327744 = 61270^2 + 54912^2 .

It is not an unprimeable number, because it can be changed into a prime (6769340647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6992637 + ... + 6993604.

Almost surely, 2^6769340644 is an apocalyptic number.

It is an amenable number.

6769340644 is a deficient number, since it is larger than the sum of its proper divisors (6251850658).

6769340644 is a wasteful number, since it uses less digits than its factorization.

6769340644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13986267 (or 13986254 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 49.

The square root of 6769340644 is about 82276.0028440857. The cubic root of 6769340644 is about 1891.6848672907.

The spelling of 6769340644 in words is "six billion, seven hundred sixty-nine million, three hundred forty thousand, six hundred forty-four".