6459 has 4 divisors (see below), whose sum is σ = 8616. Its totient is φ = 4304.

The previous prime is 6451. The next prime is 6469. The reversal of 6459 is 9546.

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

It is a cyclic number.

It is not a de Polignac number, because 6459 - 2³ = 6451 is a prime.

It is an Ulam number.

It is a D-number.

It is a plaindrome in base 7.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (6451) 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, 1074 + ... + 1079.

It is an arithmetic number, because the mean of its divisors is an integer number (2154).

2⁶⁴⁵⁹ is an apocalyptic number.

6459 is a deficient number, since it is larger than the sum of its proper divisors (2157).

6459 is a wasteful number, since it uses less digits than its factorization.

6459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156.

The product of its digits is 1080, while the sum is 24.

The square root of 6459 is about 80.3679040414. The cubic root of 6459 is about 18.6232337709.

It can be divided in two parts, 6 and 459, that added together give a triangular number (465 = T₃₀).

The spelling of 6459 in words is "six thousand, four hundred fifty-nine".