8687485181 has 4 divisors (see below), whose sum is σ = 9065201952. Its totient is φ = 8309768412.

The previous prime is 8687485171. The next prime is 8687485187. The reversal of 8687485181 is 1815847868.

8687485181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8687485181 - 2⁶ = 8687485117 is a prime.

It is a super-2 number, since 2×8687485181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687485187) 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, 188858351 + ... + 188858396.

It is an arithmetic number, because the mean of its divisors is an integer number (2266300488).

Almost surely, 2^8687485181 is an apocalyptic number.

It is an amenable number.

8687485181 is a deficient number, since it is larger than the sum of its proper divisors (377716771).

8687485181 is a wasteful number, since it uses less digits than its factorization.

8687485181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377716770.

The product of its digits is 3440640, while the sum is 56.

The square root of 8687485181 is about 93206.6799161948. The cubic root of 8687485181 is about 2055.7234607805.

The spelling of 8687485181 in words is "eight billion, six hundred eighty-seven million, four hundred eighty-five thousand, one hundred eighty-one".