6543263 has 4 divisors (see below), whose sum is σ = 6754368. Its totient is φ = 6332160.

The previous prime is 6543259. The next prime is 6543269. The reversal of 6543263 is 3623456.

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 6543263 - 2² = 6543259 is a prime.

It is a d-powerful number, because it can be written as 6 + 5⁷ + 4⁴ + 3⁵ + 2¹¹ + 6⁸ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543269) 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, 105506 + ... + 105567.

It is an arithmetic number, because the mean of its divisors is an integer number (1688592).

Almost surely, 2^6543263 is an apocalyptic number.

6543263 is a deficient number, since it is larger than the sum of its proper divisors (211105).

6543263 is a wasteful number, since it uses less digits than its factorization.

6543263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211104.

The product of its digits is 12960, while the sum is 29.

The square root of 6543263 is about 2557.9802579379. The cubic root of 6543263 is about 187.0386929380.

The spelling of 6543263 in words is "six million, five hundred forty-three thousand, two hundred sixty-three".