6694361856 has 576 divisors, whose sum is σ = 25273651200. Its totient is φ = 1700020224.

The previous prime is 6694361801. The next prime is 6694361959. The reversal of 6694361856 is 6581634966.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18240585 + ... + 18240951.

Almost surely, 2^6694361856 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 6694361856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12636825600).

6694361856 is an abundant number, since it is smaller than the sum of its proper divisors (18579289344).

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

6694361856 is a wasteful number, since it uses less digits than its factorization.

6694361856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 421 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 6694361856 is about 81819.0800241606. The cubic root of 6694361856 is about 1884.6746741835.

The spelling of 6694361856 in words is "six billion, six hundred ninety-four million, three hundred sixty-one thousand, eight hundred fifty-six".