6493 has 4 divisors (see below), whose sum is σ = 6688. Its totient is φ = 6300.

The previous prime is 6491. The next prime is 6521. The reversal of 6493 is 3946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3946 = 2 ⋅1973.

It is a cyclic number.

It is not a de Polignac number, because 6493 - 2¹ = 6491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491) 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, 33 + ... + 118.

It is an arithmetic number, because the mean of its divisors is an integer number (1672).

2⁶⁴⁹³ is an apocalyptic number.

It is an amenable number.

6493 is a deficient number, since it is larger than the sum of its proper divisors (195).

6493 is a wasteful number, since it uses less digits than its factorization.

6493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194.

The product of its digits is 648, while the sum is 22.

The square root of 6493 is about 80.5791536317. The cubic root of 6493 is about 18.6558539987.

The spelling of 6493 in words is "six thousand, four hundred ninety-three".