9986667 has 8 divisors (see below), whose sum is σ = 14098896. Its totient is φ = 6266112.

The previous prime is 9986659. The next prime is 9986693. The reversal of 9986667 is 7666899.

It is a happy number.

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

It is not a de Polignac number, because 9986667 - 2³ = 9986659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 195817 = 9986667 / (9 + 9 + 8 + 6 + 6 + 6 + 7).

It is not an unprimeable number, because it can be changed into a prime (9986467) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 97858 + ... + 97959.

It is an arithmetic number, because the mean of its divisors is an integer number (1762362).

Almost surely, 2^9986667 is an apocalyptic number.

9986667 is a deficient number, since it is larger than the sum of its proper divisors (4112229).

9986667 is a wasteful number, since it uses less digits than its factorization.

9986667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195837.

The product of its digits is 979776, while the sum is 51.

The square root of 9986667 is about 3160.1688246042. The cubic root of 9986667 is about 215.3476761580.

The spelling of 9986667 in words is "nine million, nine hundred eighty-six thousand, six hundred sixty-seven".