6291 has 8 divisors (see below), whose sum is σ = 9360. Its totient is φ = 4176.

The previous prime is 6287. The next prime is 6299. The reversal of 6291 is 1926.

It is not a de Polignac number, because 6291 - 2² = 6287 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (6299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 143.

It is an arithmetic number, because the mean of its divisors is an integer number (1170).

2⁶²⁹¹ is an apocalyptic number.

6291 is a deficient number, since it is larger than the sum of its proper divisors (3069).

6291 is a wasteful number, since it uses less digits than its factorization.

6291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 6291 is about 79.3158243984. The cubic root of 6291 is about 18.4603484810.

It can be divided in two parts, 629 and 1, that added together give a triangular number (630 = T₃₅).

The spelling of 6291 in words is "six thousand, two hundred ninety-one".