986666987 has 8 divisors (see below), whose sum is σ = 990554400. Its totient is φ = 982787904.

The previous prime is 986666963. The next prime is 986666999. The reversal of 986666987 is 789666689.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 986666987 - 2⁸ = 986666731 is a prime.

It is a super-3 number, since 3×986666987³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (986666287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330839 + ... + 333807.

It is an arithmetic number, because the mean of its divisors is an integer number (123819300).

Almost surely, 2^986666987 is an apocalyptic number.

986666987 is a deficient number, since it is larger than the sum of its proper divisors (3887413).

986666987 is a wasteful number, since it uses less digits than its factorization.

986666987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165.

The product of its digits is 47029248, while the sum is 65.

The square root of 986666987 is about 31411.2557373945. The cubic root of 986666987 is about 995.5357625741.

The spelling of 986666987 in words is "nine hundred eighty-six million, six hundred sixty-six thousand, nine hundred eighty-seven".