6543436 has 24 divisors (see below), whose sum is σ = 12425616. Its totient is φ = 3002880.

The previous prime is 6543403. The next prime is 6543443. The reversal of 6543436 is 6343456.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 6543398 and 6543407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (517734).

Almost surely, 2^6543436 is an apocalyptic number.

It is an amenable number.

6543436 is a deficient number, since it is larger than the sum of its proper divisors (5882180).

6543436 is a wasteful number, since it uses less digits than its factorization.

6543436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409 (or 2407 counting only the distinct ones).

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

The square root of 6543436 is about 2558.0140734562. The cubic root of 6543436 is about 187.0403413209.

The spelling of 6543436 in words is "six million, five hundred forty-three thousand, four hundred thirty-six".