6918856704 has 140 divisors (see below), whose sum is σ = 20671872804. Its totient is φ = 2306064384.

The previous prime is 6918856697. The next prime is 6918856717. The reversal of 6918856704 is 4076588196.

6918856704 is a `hidden beast` number, since 69 + 18 + 8 + 567 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 9 ways as a sum of consecutive naturals, for example, 658339 + ... + 668765.

Almost surely, 2^6918856704 is an apocalyptic number.

6918856704 is a gapful number since it is divisible by the number (64) 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 6918856704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10335936402).

6918856704 is an abundant number, since it is smaller than the sum of its proper divisors (13753016100).

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

6918856704 is an equidigital number, since it uses as much as digits as its factorization.

6918856704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10465 (or 10432 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 6918856704 is about 83179.6652073089. The cubic root of 6918856704 is about 1905.5109349334.

The spelling of 6918856704 in words is "six billion, nine hundred eighteen million, eight hundred fifty-six thousand, seven hundred four".