6684391773 has 48 divisors (see below), whose sum is σ = 10009359360. Its totient is φ = 4296499200.

The previous prime is 6684391759. The next prime is 6684391781. The reversal of 6684391773 is 3771934866.

It is not a de Polignac number, because 6684391773 - 2¹⁷ = 6684260701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6684391723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8691933 + ... + 8692701.

It is an arithmetic number, because the mean of its divisors is an integer number (208528320).

Almost surely, 2^6684391773 is an apocalyptic number.

It is an amenable number.

6684391773 is a deficient number, since it is larger than the sum of its proper divisors (3324967587).

6684391773 is a wasteful number, since it uses less digits than its factorization.

6684391773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1127 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 6684391773 is about 81758.1297058586. The cubic root of 6684391773 is about 1883.7385780386.

The spelling of 6684391773 in words is "six billion, six hundred eighty-four million, three hundred ninety-one thousand, seven hundred seventy-three".