6787898988 has 96 divisors (see below), whose sum is σ = 17675750400. Its totient is φ = 2014032384.

The previous prime is 6787898983. The next prime is 6787898993. The reversal of 6787898988 is 8898987876.

It is an interprime number because it is at equal distance from previous prime (6787898983) and next prime (6787898993).

It is a Harshad number since it is a multiple of its sum of digits (78).

It is not an unprimeable number, because it can be changed into a prime (6787898983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523528 + ... + 536336.

It is an arithmetic number, because the mean of its divisors is an integer number (184122400).

Almost surely, 2^6787898988 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 6787898988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8837875200).

6787898988 is an abundant number, since it is smaller than the sum of its proper divisors (10887851412).

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

6787898988 is a wasteful number, since it uses less digits than its factorization.

6787898988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12951 (or 12949 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 78.

The square root of 6787898988 is about 82388.7066775538. The cubic root of 6787898988 is about 1893.4119929326.

The spelling of 6787898988 in words is "six billion, seven hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-eight".