6689397120 has 256 divisors, whose sum is σ = 24830945280. Its totient is φ = 1499996160.

The previous prime is 6689397103. The next prime is 6689397149. The reversal of 6689397120 is 217939866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 707625 + ... + 717015.

It is an arithmetic number, because the mean of its divisors is an integer number (96995880).

Almost surely, 2^6689397120 is an apocalyptic number.

6689397120 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 6689397120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12415472640).

6689397120 is an abundant number, since it is smaller than the sum of its proper divisors (18141548160).

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

6689397120 is a wasteful number, since it uses less digits than its factorization.

6689397120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9473 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 6689397120 is about 81788.7346766045. The cubic root of 6689397120 is about 1884.2086488685.

The spelling of 6689397120 in words is "six billion, six hundred eighty-nine million, three hundred ninety-seven thousand, one hundred twenty".