6465 has 8 divisors (see below), whose sum is σ = 10368. Its totient is φ = 3440.

The previous prime is 6451. The next prime is 6469. The reversal of 6465 is 5646.

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

It is not a de Polignac number, because 6465 - 2⁴ = 6449 is a prime.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (6469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 230.

It is an arithmetic number, because the mean of its divisors is an integer number (1296).

It is an amenable number.

6465 is a deficient number, since it is larger than the sum of its proper divisors (3903).

6465 is a wasteful number, since it uses less digits than its factorization.

6465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its digits is 720, while the sum is 21.

The square root of 6465 is about 80.4052237109. The cubic root of 6465 is about 18.6289985860.

The spelling of 6465 in words is "six thousand, four hundred sixty-five".