6774491856 has 160 divisors (see below), whose sum is σ = 19449040896. Its totient is φ = 2031638400.

The previous prime is 6774491851. The next prime is 6774491861. The reversal of 6774491856 is 6581944776.

It is an interprime number because it is at equal distance from previous prime (6774491851) and next prime (6774491861).

It is a junction number, because it is equal to n+sod(n) for n = 6774491796 and 6774491805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6774491851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6835521 + ... + 6836511.

Almost surely, 2^6774491856 is an apocalyptic number.

6774491856 is a gapful number since it is divisible by the number (66) 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 6774491856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9724520448).

6774491856 is an abundant number, since it is smaller than the sum of its proper divisors (12674549040).

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

6774491856 is a wasteful number, since it uses less digits than its factorization.

6774491856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1114 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The square root of 6774491856 is about 82307.3013529177. The cubic root of 6774491856 is about 1892.1645791573.

The spelling of 6774491856 in words is "six billion, seven hundred seventy-four million, four hundred ninety-one thousand, eight hundred fifty-six".