6485 has 4 divisors (see below), whose sum is σ = 7788. Its totient is φ = 5184.

The previous prime is 6481. The next prime is 6491. The reversal of 6485 is 5846.

6485 is nontrivially palindromic in base 6.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5041 + 1444 = 71^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485 - 2² = 6481 is a prime.

It is a magnanimous number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (1947).

2⁶⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

6485 is a deficient number, since it is larger than the sum of its proper divisors (1303).

6485 is a wasteful number, since it uses less digits than its factorization.

6485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its digits is 960, while the sum is 23.

The square root of 6485 is about 80.5294977012. The cubic root of 6485 is about 18.6481889148.

It can be divided in two parts, 648 and 5, that multiplied together give a triangular number (3240 = T₈₀).

The spelling of 6485 in words is "six thousand, four hundred eighty-five".