6782539860 has 120 divisors (see below), whose sum is σ = 21488261256. Its totient is φ = 1790726400.

The previous prime is 6782539853. The next prime is 6782539921. The reversal of 6782539860 is 689352876.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 864007236 + 5918532624 = 29394^2 + 76932^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 6782539797 and 6782539806.

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 39 ways as a sum of consecutive naturals, for example, 142894 + ... + 184346.

Almost surely, 2^6782539860 is an apocalyptic number.

6782539860 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 6782539860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10744130628).

6782539860 is an abundant number, since it is smaller than the sum of its proper divisors (14705721396).

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

6782539860 is a wasteful number, since it uses less digits than its factorization.

6782539860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41575 (or 41564 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 6782539860 is about 82356.1768175284. The cubic root of 6782539860 is about 1892.9135712158.

The spelling of 6782539860 in words is "six billion, seven hundred eighty-two million, five hundred thirty-nine thousand, eight hundred sixty".