6764606784 has 392 divisors, whose sum is σ = 22853843040. Its totient is φ = 1968509952.

The previous prime is 6764606777. The next prime is 6764606789. The reversal of 6764606784 is 4876064676.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6764606784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6764606789) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 11523739 + ... + 11524325.

It is an arithmetic number, because the mean of its divisors is an integer number (58300620).

Almost surely, 2^6764606784 is an apocalyptic number.

6764606784 is a gapful number since it is divisible by the number (64) 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 6764606784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11426921520).

6764606784 is an abundant number, since it is smaller than the sum of its proper divisors (16089236256).

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

6764606784 is a wasteful number, since it uses less digits than its factorization.

6764606784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The square root of 6764606784 is about 82247.2296433138. The cubic root of 6764606784 is about 1891.2438071225.

The spelling of 6764606784 in words is "six billion, seven hundred sixty-four million, six hundred six thousand, seven hundred eighty-four".