6659032680 has 320 divisors, whose sum is σ = 23526581760. Its totient is φ = 1686085632.

The previous prime is 6659032673. The next prime is 6659032729. The reversal of 6659032680 is 862309566.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14382129 + ... + 14382591.

It is an arithmetic number, because the mean of its divisors is an integer number (73520568).

Almost surely, 2^6659032680 is an apocalyptic number.

6659032680 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 6659032680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11763290880).

6659032680 is an abundant number, since it is smaller than the sum of its proper divisors (16867549080).

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

6659032680 is a wasteful number, since it uses less digits than its factorization.

6659032680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6659032680 is about 81602.8962721299. The cubic root of 6659032680 is about 1881.3533977304.

The spelling of 6659032680 in words is "six billion, six hundred fifty-nine million, thirty-two thousand, six hundred eighty".