65391 has 8 divisors (see below), whose sum is σ = 88704. Its totient is φ = 42840.

The previous prime is 65381. The next prime is 65393. The reversal of 65391 is 19356.

65391 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 65391 - 2⁶ = 65327 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 65391.

It is not an unprimeable number, because it can be changed into a prime (65393) 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, 60 + ... + 366.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2⁶⁵³⁹¹ is an apocalyptic number.

65391 is a deficient number, since it is larger than the sum of its proper divisors (23313).

65391 is a wasteful number, since it uses less digits than its factorization.

65391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 810, while the sum is 24.

The square root of 65391 is about 255.7166400530. The cubic root of 65391 is about 40.2877171753.

The spelling of 65391 in words is "sixty-five thousand, three hundred ninety-one".