6764426649 has 24 divisors (see below), whose sum is σ = 9885549960. Its totient is φ = 4456965888.

The previous prime is 6764426551. The next prime is 6764426659. The reversal of 6764426649 is 9466244676.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3938441049 + 2825985600 = 62757^2 + 53160^2 .

It is not a de Polignac number, because 6764426649 - 2¹⁹ = 6763902361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6764426595 and 6764426604.

It is not an unprimeable number, because it can be changed into a prime (6764426659) 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 in 23 ways as a sum of consecutive naturals, for example, 270379 + ... + 294335.

It is an arithmetic number, because the mean of its divisors is an integer number (411897915).

Almost surely, 2^6764426649 is an apocalyptic number.

It is an amenable number.

6764426649 is a deficient number, since it is larger than the sum of its proper divisors (3121123311).

6764426649 is a wasteful number, since it uses less digits than its factorization.

6764426649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24329 (or 24326 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The square root of 6764426649 is about 82246.1345535460. The cubic root of 6764426649 is about 1891.2270196364.

The spelling of 6764426649 in words is "six billion, seven hundred sixty-four million, four hundred twenty-six thousand, six hundred forty-nine".