65361 has 4 divisors (see below), whose sum is σ = 87152. Its totient is φ = 43572.

The previous prime is 65357. The next prime is 65371. The reversal of 65361 is 16356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65361 - 2² = 65357 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 6 and base 13.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (65371) 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, 10891 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (21788).

2⁶⁵³⁶¹ is an apocalyptic number.

It is an amenable number.

65361 is a deficient number, since it is larger than the sum of its proper divisors (21791).

65361 is a wasteful number, since it uses less digits than its factorization.

65361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790.

The product of its digits is 540, while the sum is 21.

The square root of 65361 is about 255.6579746458. The cubic root of 65361 is about 40.2815551837.

The spelling of 65361 in words is "sixty-five thousand, three hundred sixty-one".