65418 has 8 divisors (see below), whose sum is σ = 130848. Its totient is φ = 21804.

The previous prime is 65413. The next prime is 65419. The reversal of 65418 is 81456.

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

65418 is an admirable number.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65418.

It is not an unprimeable number, because it can be changed into a prime (65413) 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 3 ways as a sum of consecutive naturals, for example, 5446 + ... + 5457.

It is an arithmetic number, because the mean of its divisors is an integer number (16356).

2⁶⁵⁴¹⁸ is an apocalyptic number.

65418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65424).

65418 is a wasteful number, since it uses less digits than its factorization.

65418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908.

The product of its digits is 960, while the sum is 24.

The square root of 65418 is about 255.7694274146. The cubic root of 65418 is about 40.2932613567.

The spelling of 65418 in words is "sixty-five thousand, four hundred eighteen".