6830521020 has 144 divisors (see below), whose sum is σ = 21547824480. Its totient is φ = 1816286976.

The previous prime is 6830521007. The next prime is 6830521067. The reversal of 6830521020 is 201250386.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1888734 + ... + 1892346.

It is an arithmetic number, because the mean of its divisors is an integer number (149637670).

Almost surely, 2^6830521020 is an apocalyptic number.

6830521020 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 6830521020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10773912240).

6830521020 is an abundant number, since it is smaller than the sum of its proper divisors (14717303460).

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

6830521020 is a wasteful number, since it uses less digits than its factorization.

6830521020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026 (or 4012 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 6830521020 is about 82646.9661875135. The cubic root of 6830521020 is about 1897.3667140673.

The spelling of 6830521020 in words is "six billion, eight hundred thirty million, five hundred twenty-one thousand, twenty".