8687140 has 48 divisors (see below), whose sum is σ = 22748544. Its totient is φ = 2707200.

The previous prime is 8687131. The next prime is 8687141. The reversal of 8687140 is 417868.

8687140 = 17² + 18² + ... + 296².

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8687096 and 8687105.

It is not an unprimeable number, because it can be changed into a prime (8687141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281 + ... + 4360.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^8687140 is an apocalyptic number.

It is an amenable number.

8687140 is an abundant number, since it is smaller than the sum of its proper divisors (14061404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8687140 is a wasteful number, since it uses less digits than its factorization.

8687140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668 (or 5666 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 8687140 is about 2947.3954604023. The cubic root of 8687140 is about 205.5696233642.

It can be divided in two parts, 868 and 7140, that added together give a palindrome (8008).

The spelling of 8687140 in words is "eight million, six hundred eighty-seven thousand, one hundred forty".