6897719808 has 480 divisors, whose sum is σ = 25190352000. Its totient is φ = 1851752448.

The previous prime is 6897719779. The next prime is 6897719809. The reversal of 6897719808 is 8089177986.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6897719809) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 11515093 + ... + 11515691.

It is an arithmetic number, because the mean of its divisors is an integer number (52479900).

Almost surely, 2^6897719808 is an apocalyptic number.

6897719808 is a gapful number since it is divisible by the number (68) 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 6897719808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12595176000).

6897719808 is an abundant number, since it is smaller than the sum of its proper divisors (18292632192).

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

6897719808 is a wasteful number, since it uses less digits than its factorization.

6897719808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The square root of 6897719808 is about 83052.5123521257. The cubic root of 6897719808 is about 1903.5685296818.

The spelling of 6897719808 in words is "six billion, eight hundred ninety-seven million, seven hundred nineteen thousand, eight hundred eight".