6680356916 has 6 divisors (see below), whose sum is σ = 11690624610. Its totient is φ = 3340178456.

The previous prime is 6680356909. The next prime is 6680356931. The reversal of 6680356916 is 6196530866.

It can be written as a sum of positive squares in only one way, i.e., 4822746916 + 1857610000 = 69446^2 + 43100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835044611 + ... + 835044618.

It is an arithmetic number, because the mean of its divisors is an integer number (1948437435).

Almost surely, 2^6680356916 is an apocalyptic number.

It is an amenable number.

6680356916 is a deficient number, since it is larger than the sum of its proper divisors (5010267694).

6680356916 is a wasteful number, since it uses less digits than its factorization.

6680356916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670089233 (or 1670089231 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 6680356916 is about 81733.4504104654. The cubic root of 6680356916 is about 1883.3594786948.

The spelling of 6680356916 in words is "six billion, six hundred eighty million, three hundred fifty-six thousand, nine hundred sixteen".