6872817173 has 2 divisors, whose sum is σ = 6872817174. Its totient is φ = 6872817172.

The previous prime is 6872817157. The next prime is 6872817247. The reversal of 6872817173 is 3717182786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6400320004 + 472497169 = 80002^2 + 21737^2 .

It is a cyclic number.

It is not a de Polignac number, because 6872817173 - 2⁴ = 6872817157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6872817073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3436408586 + 3436408587.

It is an arithmetic number, because the mean of its divisors is an integer number (3436408587).

Almost surely, 2^6872817173 is an apocalyptic number.

It is an amenable number.

6872817173 is a deficient number, since it is larger than the sum of its proper divisors (1).

6872817173 is an equidigital number, since it uses as much as digits as its factorization.

6872817173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 50.

The square root of 6872817173 is about 82902.4557718286. The cubic root of 6872817173 is about 1901.2749681743.

The spelling of 6872817173 in words is "six billion, eight hundred seventy-two million, eight hundred seventeen thousand, one hundred seventy-three".