650536543 has 4 divisors (see below), whose sum is σ = 650930800. Its totient is φ = 650142288.

The previous prime is 650536517. The next prime is 650536583. The reversal of 650536543 is 345635056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650536543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650536583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194643 + ... + 197956.

It is an arithmetic number, because the mean of its divisors is an integer number (162732700).

Almost surely, 2^650536543 is an apocalyptic number.

650536543 is a deficient number, since it is larger than the sum of its proper divisors (394257).

650536543 is a wasteful number, since it uses less digits than its factorization.

650536543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394256.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 650536543 is about 25505.6178713632. The cubic root of 650536543 is about 866.4773857020.

The spelling of 650536543 in words is "six hundred fifty million, five hundred thirty-six thousand, five hundred forty-three".