6738684688 has 20 divisors (see below), whose sum is σ = 13075507980. Its totient is φ = 3364360064.

The previous prime is 6738684649. The next prime is 6738684697. The reversal of 6738684688 is 8864868376.

It can be written as a sum of positive squares in 2 ways, for example, as 3937311504 + 2801373184 = 62748^2 + 52928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300223 + ... + 321886.

It is an arithmetic number, because the mean of its divisors is an integer number (653775399).

Almost surely, 2^6738684688 is an apocalyptic number.

It is an amenable number.

6738684688 is a deficient number, since it is larger than the sum of its proper divisors (6336823292).

6738684688 is a wasteful number, since it uses less digits than its factorization.

6738684688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622794 (or 622788 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 64.

The square root of 6738684688 is about 82089.4919462899. The cubic root of 6738684688 is about 1888.8249545901.

The spelling of 6738684688 in words is "six billion, seven hundred thirty-eight million, six hundred eighty-four thousand, six hundred eighty-eight".