9687987 has 6 divisors (see below), whose sum is σ = 13993772. Its totient is φ = 6458652.

The previous prime is 9687947. The next prime is 9687989. The reversal of 9687987 is 7897869.

It is not a de Polignac number, because 9687987 - 2¹¹ = 9685939 is a prime.

It is a super-2 number, since 2×9687987² = 187714184224338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9687989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 538213 + ... + 538230.

Almost surely, 2^9687987 is an apocalyptic number.

9687987 is a deficient number, since it is larger than the sum of its proper divisors (4305785).

9687987 is a wasteful number, since it uses less digits than its factorization.

9687987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076449 (or 1076446 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9687987 is about 3112.5531320766. The cubic root of 9687987 is about 213.1790467013.

The spelling of 9687987 in words is "nine million, six hundred eighty-seven thousand, nine hundred eighty-seven".