987532687 has 4 divisors (see below), whose sum is σ = 987606400. Its totient is φ = 987458976.

The previous prime is 987532661. The next prime is 987532709. The reversal of 987532687 is 786235789.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987532687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987532387) 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, 10458 + ... + 45655.

It is an arithmetic number, because the mean of its divisors is an integer number (246901600).

Almost surely, 2^987532687 is an apocalyptic number.

987532687 is a deficient number, since it is larger than the sum of its proper divisors (73713).

987532687 is a wasteful number, since it uses less digits than its factorization.

987532687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73712.

The product of its digits is 5080320, while the sum is 55.

The square root of 987532687 is about 31425.0328082565. The cubic root of 987532687 is about 995.8268379441.

The spelling of 987532687 in words is "nine hundred eighty-seven million, five hundred thirty-two thousand, six hundred eighty-seven".