6777856224 has 48 divisors (see below), whose sum is σ = 19768749840. Its totient is φ = 2259285120.

The previous prime is 6777856193. The next prime is 6777856243. The reversal of 6777856224 is 4226587776.

6777856224 is a `hidden beast` number, since 6 + 7 + 7 + 7 + 8 + 5 + 622 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3921507 + ... + 3923234.

It is an arithmetic number, because the mean of its divisors is an integer number (411848955).

Almost surely, 2^6777856224 is an apocalyptic number.

It is an amenable number.

6777856224 is an abundant number, since it is smaller than the sum of its proper divisors (12990893616).

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

6777856224 is a wasteful number, since it uses less digits than its factorization.

6777856224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844760 (or 7844746 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The square root of 6777856224 is about 82327.7366626825. The cubic root of 6777856224 is about 1892.4777580920.

The spelling of 6777856224 in words is "six billion, seven hundred seventy-seven million, eight hundred fifty-six thousand, two hundred twenty-four".