6820633128 has 16 divisors (see below), whose sum is σ = 17051582880. Its totient is φ = 2273544368.

The previous prime is 6820633093. The next prime is 6820633139. The reversal of 6820633128 is 8213360286.

It is a super-3 number, since 3×6820633128³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142096500 + ... + 142096547.

It is an arithmetic number, because the mean of its divisors is an integer number (1065723930).

Almost surely, 2^6820633128 is an apocalyptic number.

It is an amenable number.

6820633128 is an abundant number, since it is smaller than the sum of its proper divisors (10230949752).

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

6820633128 is a wasteful number, since it uses less digits than its factorization.

6820633128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284193056 (or 284193052 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 6820633128 is about 82587.1244686483. The cubic root of 6820633128 is about 1896.4507264875.

The spelling of 6820633128 in words is "six billion, eight hundred twenty million, six hundred thirty-three thousand, one hundred twenty-eight".