8687485172 has 24 divisors (see below), whose sum is σ = 15279130440. Its totient is φ = 4322071040.

The previous prime is 8687485171. The next prime is 8687485187. The reversal of 8687485172 is 2715847868.

It can be written as a sum of positive squares in 4 ways, for example, as 126736 + 8687358436 = 356^2 + 93206^2 .

It is a super-2 number, since 2×8687485172² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687485171) 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, 715472 + ... + 727512.

It is an arithmetic number, because the mean of its divisors is an integer number (636630435).

Almost surely, 2^8687485172 is an apocalyptic number.

It is an amenable number.

8687485172 is a deficient number, since it is larger than the sum of its proper divisors (6591645268).

8687485172 is a wasteful number, since it uses less digits than its factorization.

8687485172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931 (or 12929 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 56.

The square root of 8687485172 is about 93206.6798679150. The cubic root of 8687485172 is about 2055.7234600706.

The spelling of 8687485172 in words is "eight billion, six hundred eighty-seven million, four hundred eighty-five thousand, one hundred seventy-two".