65855 has 4 divisors (see below), whose sum is σ = 79032. Its totient is φ = 52680.

The previous prime is 65851. The next prime is 65867. The reversal of 65855 is 55856.

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

It is not a de Polignac number, because 65855 - 2² = 65851 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

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 65855.

It is not an unprimeable number, because it can be changed into a prime (65851) 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, 6581 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (19758).

2⁶⁵⁸⁵⁵ is an apocalyptic number.

65855 is a deficient number, since it is larger than the sum of its proper divisors (13177).

65855 is a wasteful number, since it uses less digits than its factorization.

65855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176.

The product of its digits is 6000, while the sum is 29.

The square root of 65855 is about 256.6222905361. The cubic root of 65855 is about 40.3827835671.

Subtracting from 65855 its reverse (55856), we obtain a palindrome (9999).

The spelling of 65855 in words is "sixty-five thousand, eight hundred fifty-five".