6463543 has 4 divisors (see below), whose sum is σ = 6545440. Its totient is φ = 6381648.

The previous prime is 6463537. The next prime is 6463571. The reversal of 6463543 is 3453646.

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 6463543 - 2⁹ = 6463031 is a prime.

It is a super-2 number, since 2×6463543² = 83554776225698, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6² + 4 + 6⁸ + 3⁶ + 5³ + 4³ + 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 (6463573) 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, 40830 + ... + 40987.

It is an arithmetic number, because the mean of its divisors is an integer number (1636360).

Almost surely, 2^6463543 is an apocalyptic number.

6463543 is a deficient number, since it is larger than the sum of its proper divisors (81897).

6463543 is an equidigital number, since it uses as much as digits as its factorization.

6463543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81896.

The product of its digits is 25920, while the sum is 31.

The square root of 6463543 is about 2542.3498972407. The cubic root of 6463543 is about 186.2759902472.

The spelling of 6463543 in words is "six million, four hundred sixty-three thousand, five hundred forty-three".