6696347840 has 504 divisors, whose sum is σ = 21251570400. Its totient is φ = 2007742464.

The previous prime is 6696347831. The next prime is 6696347869. The reversal of 6696347840 is 487436966.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 352439351 + ... + 352439369.

Almost surely, 2^6696347840 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 6696347840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10625785200).

6696347840 is an abundant number, since it is smaller than the sum of its proper divisors (14555222560).

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

6696347840 is a wasteful number, since it uses less digits than its factorization.

6696347840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The square root of 6696347840 is about 81831.2155598339. The cubic root of 6696347840 is about 1884.8610282008.

The spelling of 6696347840 in words is "six billion, six hundred ninety-six million, three hundred forty-seven thousand, eight hundred forty".