650534721 has 8 divisors (see below), whose sum is σ = 895359744. Its totient is φ = 419699760.

The previous prime is 650534701. The next prime is 650534747. The reversal of 650534721 is 127435056.

650534721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 650534721 - 2¹³ = 650526529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650534701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497406 + ... + 3497591.

It is an arithmetic number, because the mean of its divisors is an integer number (111919968).

Almost surely, 2^650534721 is an apocalyptic number.

It is an amenable number.

650534721 is a deficient number, since it is larger than the sum of its proper divisors (244825023).

650534721 is a wasteful number, since it uses less digits than its factorization.

650534721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995031.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 650534721 is about 25505.5821537169. The cubic root of 650534721 is about 866.4765767680.

Adding to 650534721 its reverse (127435056), we get a palindrome (777969777).

The spelling of 650534721 in words is "six hundred fifty million, five hundred thirty-four thousand, seven hundred twenty-one".