6538 has 8 divisors (see below), whose sum is σ = 11232. Its totient is φ = 2796.

The previous prime is 6529. The next prime is 6547. The reversal of 6538 is 8356.

It is an interprime number because it is at equal distance from previous prime (6529) and next prime (6547).

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

It is a nialpdrome in base 9.

It is an unprimeable number.

6538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220 + ... + 247.

It is an arithmetic number, because the mean of its divisors is an integer number (1404).

2⁶⁵³⁸ is an apocalyptic number.

6538 is a deficient number, since it is larger than the sum of its proper divisors (4694).

6538 is a wasteful number, since it uses less digits than its factorization.

6538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

The product of its digits is 720, while the sum is 22.

The square root of 6538 is about 80.8579000469. The cubic root of 6538 is about 18.6988531997.

The spelling of 6538 in words is "six thousand, five hundred thirty-eight".