6891322368 has 264 divisors, whose sum is σ = 22631992272. Its totient is φ = 1852440576.

The previous prime is 6891322337. The next prime is 6891322411. The reversal of 6891322368 is 8632231986.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2557630 + ... + 2560322.

Almost surely, 2^6891322368 is an apocalyptic number.

6891322368 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 6891322368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11315996136).

6891322368 is an abundant number, since it is smaller than the sum of its proper divisors (15740669904).

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

6891322368 is a wasteful number, since it uses less digits than its factorization.

6891322368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2722 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 6891322368 is about 83013.9889898082. The cubic root of 6891322368 is about 1902.9798456605.

The spelling of 6891322368 in words is "six billion, eight hundred ninety-one million, three hundred twenty-two thousand, three hundred sixty-eight".