6681397173 has 8 divisors (see below), whose sum is σ = 9718395936. Its totient is φ = 4049331600.

The previous prime is 6681397157. The next prime is 6681397181. The reversal of 6681397173 is 3717931866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6681397173 - 2⁴ = 6681397157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681397133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101233258 + ... + 101233323.

It is an arithmetic number, because the mean of its divisors is an integer number (1214799492).

Almost surely, 2^6681397173 is an apocalyptic number.

It is an amenable number.

6681397173 is a deficient number, since it is larger than the sum of its proper divisors (3036998763).

6681397173 is a wasteful number, since it uses less digits than its factorization.

6681397173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202466595.

The product of its digits is 1143072, while the sum is 51.

The square root of 6681397173 is about 81739.8138791617. The cubic root of 6681397173 is about 1883.4572317651.

The spelling of 6681397173 in words is "six billion, six hundred eighty-one million, three hundred ninety-seven thousand, one hundred seventy-three".