86965 has 4 divisors (see below), whose sum is σ = 104364. Its totient is φ = 69568.

The previous prime is 86959. The next prime is 86969. The reversal of 86965 is 56968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 62001 = 158^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 86965 - 2⁷ = 86837 is a prime.

It is a super-2 number, since 2×86965² = 15125822450, which contains 22 as substring.

It is a Duffinian number.

86965 is a lucky number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 86965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8692 + ... + 8701.

It is an arithmetic number, because the mean of its divisors is an integer number (26091).

2⁸⁶⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

86965 is a deficient number, since it is larger than the sum of its proper divisors (17399).

86965 is a wasteful number, since it uses less digits than its factorization.

86965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17398.

The product of its digits is 12960, while the sum is 34.

The square root of 86965 is about 294.8982875501. The cubic root of 86965 is about 44.3045334021.

The spelling of 86965 in words is "eighty-six thousand, nine hundred sixty-five".