6543071 has 4 divisors (see below), whose sum is σ = 6550992. Its totient is φ = 6535152.

The previous prime is 6543059. The next prime is 6543073. The reversal of 6543071 is 1703456.

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 6543071 - 2⁶ = 6543007 is a prime.

It is a super-2 number, since 2×6543071² = 85623556222082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6543071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543073) 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, 2555 + ... + 4428.

It is an arithmetic number, because the mean of its divisors is an integer number (1637748).

Almost surely, 2^6543071 is an apocalyptic number.

6543071 is a deficient number, since it is larger than the sum of its proper divisors (7921).

6543071 is an equidigital number, since it uses as much as digits as its factorization.

6543071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7920.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 6543071 is about 2557.9427280532. The cubic root of 6543071 is about 187.0368634848.

The spelling of 6543071 in words is "six million, five hundred forty-three thousand, seventy-one".