6728785738 has 16 divisors (see below), whose sum is σ = 10586525184. Its totient is φ = 3203813520.

The previous prime is 6728785729. The next prime is 6728785747. The reversal of 6728785738 is 8375878276.

It is an interprime number because it is at equal distance from previous prime (6728785729) and next prime (6728785747).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963858 + ... + 970813.

It is an arithmetic number, because the mean of its divisors is an integer number (661657824).

Almost surely, 2^6728785738 is an apocalyptic number.

6728785738 is a deficient number, since it is larger than the sum of its proper divisors (3857739446).

6728785738 is a wasteful number, since it uses less digits than its factorization.

6728785738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934757.

The product of its digits is 31610880, while the sum is 61.

The square root of 6728785738 is about 82029.1761387374. The cubic root of 6728785738 is about 1887.8996233397.

The spelling of 6728785738 in words is "six billion, seven hundred twenty-eight million, seven hundred eighty-five thousand, seven hundred thirty-eight".