6543393 has 4 divisors (see below), whose sum is σ = 8724528. Its totient is φ = 4362260.

The previous prime is 6543389. The next prime is 6543403. The reversal of 6543393 is 3933456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6543393 - 2² = 6543389 is a prime.

It is a super-3 number, since 3×6543393³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6543323) 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, 1090563 + ... + 1090568.

It is an arithmetic number, because the mean of its divisors is an integer number (2181132).

Almost surely, 2^6543393 is an apocalyptic number.

It is an amenable number.

6543393 is a deficient number, since it is larger than the sum of its proper divisors (2181135).

6543393 is a wasteful number, since it uses less digits than its factorization.

6543393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181134.

The product of its digits is 29160, while the sum is 33.

The square root of 6543393 is about 2558.0056684847. The cubic root of 6543393 is about 187.0399316099.

The spelling of 6543393 in words is "six million, five hundred forty-three thousand, three hundred ninety-three".