6543023 has 4 divisors (see below), whose sum is σ = 6549480. Its totient is φ = 6536568.

The previous prime is 6543007. The next prime is 6543029. The reversal of 6543023 is 3203456.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6543023 - 2⁴ = 6543007 is a prime.

It is a super-2 number, since 2×6543023² = 85622299957058, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁸ + 5⁷ + 4⁴ + 3² + 0 + 2¹¹ + 3¹⁴ .

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 6543023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543029) 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, 1340 + ... + 3857.

It is an arithmetic number, because the mean of its divisors is an integer number (1637370).

Almost surely, 2^6543023 is an apocalyptic number.

6543023 is a deficient number, since it is larger than the sum of its proper divisors (6457).

6543023 is a wasteful number, since it uses less digits than its factorization.

6543023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 6543023 is about 2557.9333454959. The cubic root of 6543023 is about 187.0364061159.

Adding to 6543023 its reverse (3203456), we get a palindrome (9746479).

The spelling of 6543023 in words is "six million, five hundred forty-three thousand, twenty-three".