6987587 has 4 divisors (see below), whose sum is σ = 6999600. Its totient is φ = 6975576.

The previous prime is 6987583. The next prime is 6987593. The reversal of 6987587 is 7857896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6987587 - 2² = 6987583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6987583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087 + ... + 6312.

It is an arithmetic number, because the mean of its divisors is an integer number (1749900).

Almost surely, 2^6987587 is an apocalyptic number.

6987587 is a deficient number, since it is larger than the sum of its proper divisors (12013).

6987587 is a wasteful number, since it uses less digits than its factorization.

6987587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12012.

The product of its digits is 846720, while the sum is 50.

The square root of 6987587 is about 2643.4044336802. The cubic root of 6987587 is about 191.1799789234.

The spelling of 6987587 in words is "six million, nine hundred eighty-seven thousand, five hundred eighty-seven".