6544963 has 4 divisors (see below), whose sum is σ = 6550488. Its totient is φ = 6539440.

The previous prime is 6544943. The next prime is 6545003. The reversal of 6544963 is 3694456.

It is a happy number.

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 6544963 - 2⁹ = 6544451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6544943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (1637622).

Almost surely, 2^6544963 is an apocalyptic number.

6544963 is a deficient number, since it is larger than the sum of its proper divisors (5525).

6544963 is a wasteful number, since it uses less digits than its factorization.

6544963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524.

The product of its digits is 77760, while the sum is 37.

The square root of 6544963 is about 2558.3125297743. The cubic root of 6544963 is about 187.0548896605.

The spelling of 6544963 in words is "six million, five hundred forty-four thousand, nine hundred sixty-three".