6680747408 has 10 divisors (see below), whose sum is σ = 12943948134. Its totient is φ = 3340373696.

The previous prime is 6680747407. The next prime is 6680747441. The reversal of 6680747408 is 8047470866.

It can be written as a sum of positive squares in only one way, i.e., 6679465984 + 1281424 = 81728^2 + 1132^2 .

It is not an unprimeable number, because it can be changed into a prime (6680747407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208773341 + ... + 208773372.

Almost surely, 2^6680747408 is an apocalyptic number.

It is an amenable number.

6680747408 is a deficient number, since it is larger than the sum of its proper divisors (6263200726).

6680747408 is a wasteful number, since it uses less digits than its factorization.

6680747408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417546721 (or 417546715 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The square root of 6680747408 is about 81735.8391894278. The cubic root of 6680747408 is about 1883.3961744627.

The spelling of 6680747408 in words is "six billion, six hundred eighty million, seven hundred forty-seven thousand, four hundred eight".