6780898560 has 144 divisors (see below), whose sum is σ = 21761732160. Its totient is φ = 1799454720.

The previous prime is 6780898517. The next prime is 6780898567. The reversal of 6780898560 is 658980876.

It is a self number, because there is not a number n which added to its sum of digits gives 6780898560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780898567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806056 + ... + 814424.

It is an arithmetic number, because the mean of its divisors is an integer number (151123140).

Almost surely, 2^6780898560 is an apocalyptic number.

6780898560 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 6780898560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10880866080).

6780898560 is an abundant number, since it is smaller than the sum of its proper divisors (14980833600).

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

6780898560 is a wasteful number, since it uses less digits than its factorization.

6780898560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604 (or 8590 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The square root of 6780898560 is about 82346.2115704177. The cubic root of 6780898560 is about 1892.7608708140.

The spelling of 6780898560 in words is "six billion, seven hundred eighty million, eight hundred ninety-eight thousand, five hundred sixty".