6543456 has 24 divisors (see below), whose sum is σ = 17176824. Its totient is φ = 2181120.

The previous prime is 6543451. The next prime is 6543457.

6543456 is nontrivially palindromic in base 10.

6543456 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543451) 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, 33985 + ... + 34176.

It is an arithmetic number, because the mean of its divisors is an integer number (715701).

Almost surely, 2^6543456 is an apocalyptic number.

It is an amenable number.

6543456 is an abundant number, since it is smaller than the sum of its proper divisors (10633368).

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

6543456 is a wasteful number, since it uses less digits than its factorization.

6543456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68174 (or 68166 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 6543456 is about 2558.0179827359. The cubic root of 6543456 is about 187.0405318835.

The spelling of 6543456 in words is "six million, five hundred forty-three thousand, four hundred fifty-six".