986689 has 8 divisors (see below), whose sum is σ = 1133280. Its totient is φ = 849600.

The previous prime is 986659. The next prime is 986693.

It is a happy number.

986689 is nontrivially palindromic in base 10.

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 986689 - 2⁹ = 986177 is a prime.

It is a Duffinian number.

986689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (986659) 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, 2152 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (141660).

2⁹⁸⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

986689 is a deficient number, since it is larger than the sum of its proper divisors (146591).

986689 is a wasteful number, since it uses less digits than its factorization.

986689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751.

The product of its digits is 186624, while the sum is 46.

The square root of 986689 is about 993.3222035171. The cubic root of 986689 is about 99.5543166141.

The spelling of 986689 in words is "nine hundred eighty-six thousand, six hundred eighty-nine".