650536544 has 60 divisors (see below), whose sum is σ = 1494288684. Its totient is φ = 278768448.

The previous prime is 650536517. The next prime is 650536583. The reversal of 650536544 is 445635056.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 650536498 and 650536507.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 72599 + ... + 81065.

Almost surely, 2^650536544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650536544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747144342).

650536544 is an abundant number, since it is smaller than the sum of its proper divisors (843752140).

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

650536544 is an frugal number, since it uses more digits than its factorization.

With its successor (650536545) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (8505).

650536544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505 (or 8476 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 650536544 is about 25505.6178909667. The cubic root of 650536544 is about 866.4773861459.

The spelling of 650536544 in words is "six hundred fifty million, five hundred thirty-six thousand, five hundred forty-four".