6866814996 has 144 divisors (see below), whose sum is σ = 18513855360. Its totient is φ = 2142201600.

The previous prime is 6866814989. The next prime is 6866815003. The reversal of 6866814996 is 6994186686.

6866814996 is a `hidden beast` number, since 6 + 8 + 66 + 81 + 499 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (6866814989) and next prime (6866815003).

It is a congruent number.

It is an unprimeable number.

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, 6778186 + ... + 6779198.

It is an arithmetic number, because the mean of its divisors is an integer number (128568440).

Almost surely, 2^6866814996 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 6866814996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9256927680).

6866814996 is an abundant number, since it is smaller than the sum of its proper divisors (11647040364).

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

6866814996 is a wasteful number, since it uses less digits than its factorization.

6866814996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1241 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The square root of 6866814996 is about 82866.2476283318. The cubic root of 6866814996 is about 1900.7213323913.

The spelling of 6866814996 in words is "six billion, eight hundred sixty-six million, eight hundred fourteen thousand, nine hundred ninety-six".