8487287173 has 2 divisors, whose sum is σ = 8487287174. Its totient is φ = 8487287172.

The previous prime is 8487287113. The next prime is 8487287177. The reversal of 8487287173 is 3717827848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8085966084 + 401321089 = 89922^2 + 20033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8487287173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8487287177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4243643586 + 4243643587.

It is an arithmetic number, because the mean of its divisors is an integer number (4243643587).

Almost surely, 2^8487287173 is an apocalyptic number.

It is an amenable number.

8487287173 is a deficient number, since it is larger than the sum of its proper divisors (1).

8487287173 is an equidigital number, since it uses as much as digits as its factorization.

8487287173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4214784, while the sum is 55.

The square root of 8487287173 is about 92126.4737901110. The cubic root of 8487287173 is about 2039.8096045715.

The spelling of 8487287173 in words is "eight billion, four hundred eighty-seven million, two hundred eighty-seven thousand, one hundred seventy-three".