6897778608 has 240 divisors, whose sum is σ = 21373858176. Its totient is φ = 1910200320.

The previous prime is 6897778553. The next prime is 6897778619. The reversal of 6897778608 is 8068777986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24373635 + ... + 24373917.

Almost surely, 2^6897778608 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 6897778608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10686929088).

6897778608 is an abundant number, since it is smaller than the sum of its proper divisors (14476079568).

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

6897778608 is a wasteful number, since it uses less digits than its factorization.

6897778608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 66.

The square root of 6897778608 is about 83052.8663442750. The cubic root of 6897778608 is about 1903.5739386920.

The spelling of 6897778608 in words is "six billion, eight hundred ninety-seven million, seven hundred seventy-eight thousand, six hundred eight".