6815897088 has 720 divisors, whose sum is σ = 25496368128. Its totient is φ = 1581465600.

The previous prime is 6815897071. The next prime is 6815897117. The reversal of 6815897088 is 8807985186.

It is a super-2 number, since 2×6815897088² = 92912906228413759488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 219867633 + ... + 219867663.

Almost surely, 2^6815897088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6815897088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12748184064).

6815897088 is an abundant number, since it is smaller than the sum of its proper divisors (18680471040).

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

6815897088 is a wasteful number, since it uses less digits than its factorization.

6815897088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 60.

The square root of 6815897088 is about 82558.4464970120. The cubic root of 6815897088 is about 1896.0116789681.

The spelling of 6815897088 in words is "six billion, eight hundred fifteen million, eight hundred ninety-seven thousand, eighty-eight".