6891800976 has 80 divisors (see below), whose sum is σ = 19841140800. Its totient is φ = 2290401792.

The previous prime is 6891800959. The next prime is 6891801013. The reversal of 6891800976 is 6790081986.

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

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 15 ways as a sum of consecutive naturals, for example, 121915 + ... + 169253.

It is an arithmetic number, because the mean of its divisors is an integer number (248014260).

Almost surely, 2^6891800976 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 6891800976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9920570400).

6891800976 is an abundant number, since it is smaller than the sum of its proper divisors (12949339824).

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

6891800976 is a wasteful number, since it uses less digits than its factorization.

6891800976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47693 (or 47681 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 6891800976 is about 83016.8716346262. The cubic root of 6891800976 is about 1903.0238991453.

The spelling of 6891800976 in words is "six billion, eight hundred ninety-one million, eight hundred thousand, nine hundred seventy-six".