6723968738 has 16 divisors (see below), whose sum is σ = 10324057920. Its totient is φ = 3282669936.

The previous prime is 6723968731. The next prime is 6723968749. The reversal of 6723968738 is 8378693276.

It is not an unprimeable number, because it can be changed into a prime (6723968731) 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 7 ways as a sum of consecutive naturals, for example, 273656 + ... + 297212.

It is an arithmetic number, because the mean of its divisors is an integer number (645253620).

Almost surely, 2^6723968738 is an apocalyptic number.

6723968738 is a deficient number, since it is larger than the sum of its proper divisors (3600089182).

6723968738 is a wasteful number, since it uses less digits than its factorization.

6723968738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26921.

The product of its digits is 18289152, while the sum is 59.

The square root of 6723968738 is about 81999.8093778272. The cubic root of 6723968738 is about 1887.4490128940.

The spelling of 6723968738 in words is "six billion, seven hundred twenty-three million, nine hundred sixty-eight thousand, seven hundred thirty-eight".