86709 has 8 divisors (see below), whose sum is σ = 132160. Its totient is φ = 49536.

The previous prime is 86693. The next prime is 86711. The reversal of 86709 is 90768.

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 86709 - 2⁴ = 86693 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 86709.

It is not an unprimeable number, because it can be changed into a prime (86719) 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, 2044 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (16520).

2⁸⁶⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

86709 is a deficient number, since it is larger than the sum of its proper divisors (45451).

86709 is a wasteful number, since it uses less digits than its factorization.

86709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 86709 is about 294.4639196914. The cubic root of 86709 is about 44.2610173977.

The spelling of 86709 in words is "eighty-six thousand, seven hundred nine".