8487172313 has 4 divisors (see below), whose sum is σ = 8487724980. Its totient is φ = 8486619648.

The previous prime is 8487172307. The next prime is 8487172363. The reversal of 8487172313 is 3132717848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2419852864 + 6067319449 = 49192^2 + 77893^2 .

It is a cyclic number.

It is not a de Polignac number, because 8487172313 - 2¹⁶ = 8487106777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8487172303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252620 + ... + 284237.

It is an arithmetic number, because the mean of its divisors is an integer number (2121931245).

Almost surely, 2^8487172313 is an apocalyptic number.

It is an amenable number.

8487172313 is a deficient number, since it is larger than the sum of its proper divisors (552667).

8487172313 is a wasteful number, since it uses less digits than its factorization.

8487172313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552666.

The product of its digits is 225792, while the sum is 44.

The square root of 8487172313 is about 92125.8504058443. The cubic root of 8487172313 is about 2039.8004028253.

The spelling of 8487172313 in words is "eight billion, four hundred eighty-seven million, one hundred seventy-two thousand, three hundred thirteen".