104565 has 8 divisors (see below), whose sum is σ = 167328. Its totient is φ = 55760.

The previous prime is 104561. The next prime is 104579. The reversal of 104565 is 565401.

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 104565 - 2² = 104561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104561) 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, 3471 + ... + 3500.

It is an arithmetic number, because the mean of its divisors is an integer number (20916).

2¹⁰⁴⁵⁶⁵ is an apocalyptic number.

104565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104565 is a deficient number, since it is larger than the sum of its proper divisors (62763).

104565 is an equidigital number, since it uses as much as digits as its factorization.

104565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 104565 is about 323.3651187126. The cubic root of 104565 is about 47.1117005204. Note that the first 3 decimals are identical.

Adding to 104565 its reverse (565401), we get a palindrome (669966).

The spelling of 104565 in words is "one hundred four thousand, five hundred sixty-five".