65285 has 8 divisors (see below), whose sum is σ = 85536. Its totient is φ = 47440.

The previous prime is 65269. The next prime is 65287. The reversal of 65285 is 58256.

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

It is not a de Polignac number, because 65285 - 2⁴ = 65269 is a prime.

It is an Ulam number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65287) 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, 539 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (10692).

2⁶⁵²⁸⁵ is an apocalyptic number.

It is an amenable number.

65285 is a deficient number, since it is larger than the sum of its proper divisors (20251).

65285 is a wasteful number, since it uses less digits than its factorization.

65285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203.

The product of its digits is 2400, while the sum is 26.

The square root of 65285 is about 255.5092953299. The cubic root of 65285 is about 40.2659363614.

It can be divided in two parts, 6528 and 5, that multiplied together give a triangular number (32640 = T₂₅₅).

The spelling of 65285 in words is "sixty-five thousand, two hundred eighty-five".