6691359660 has 96 divisors (see below), whose sum is σ = 19405612800. Its totient is φ = 1720723200.

The previous prime is 6691359659. The next prime is 6691359673. The reversal of 6691359660 is 669531966.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1826911 + ... + 1830569.

It is an arithmetic number, because the mean of its divisors is an integer number (202141800).

Almost surely, 2^6691359660 is an apocalyptic number.

6691359660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691359660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9702806400).

6691359660 is an abundant number, since it is smaller than the sum of its proper divisors (12714253140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6691359660 is a wasteful number, since it uses less digits than its factorization.

6691359660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 51.

The square root of 6691359660 is about 81800.7314148229. The cubic root of 6691359660 is about 1884.3928943349.

The spelling of 6691359660 in words is "six billion, six hundred ninety-one million, three hundred fifty-nine thousand, six hundred sixty".