8687540 has 12 divisors (see below), whose sum is σ = 18243876. Its totient is φ = 3475008.

The previous prime is 8687521. The next prime is 8687587. The reversal of 8687540 is 457868.

It can be written as a sum of positive squares in 2 ways, for example, as 2477476 + 6210064 = 1574^2 + 2492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8687494 and 8687503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217169 + ... + 217208.

It is an arithmetic number, because the mean of its divisors is an integer number (1520323).

Almost surely, 2^8687540 is an apocalyptic number.

It is an amenable number.

8687540 is an abundant number, since it is smaller than the sum of its proper divisors (9556336).

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

8687540 is a wasteful number, since it uses less digits than its factorization.

8687540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434386 (or 434384 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 8687540 is about 2947.4633161415. The cubic root of 8687540 is about 205.5727784720.

The spelling of 8687540 in words is "eight million, six hundred eighty-seven thousand, five hundred forty".