6543320 has 32 divisors (see below), whose sum is σ = 16826400. Its totient is φ = 2243328.

The previous prime is 6543307. The next prime is 6543323. The reversal of 6543320 is 233456.

It is a plaindrome in base 12.

It is a nialpdrome in base 10.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 11405 + ... + 11964.

It is an arithmetic number, because the mean of its divisors is an integer number (525825).

Almost surely, 2^6543320 is an apocalyptic number.

It is an amenable number.

6543320 is an abundant number, since it is smaller than the sum of its proper divisors (10283080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6543320 is a wasteful number, since it uses less digits than its factorization.

6543320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23387 (or 23383 counting only the distinct ones).

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

The square root of 6543320 is about 2557.9913995164. The cubic root of 6543320 is about 187.0392360500.

Adding to 6543320 its reverse (233456), we get a palindrome (6776776).

The spelling of 6543320 in words is "six million, five hundred forty-three thousand, three hundred twenty".