650016321 has 4 divisors (see below), whose sum is σ = 866688432. Its totient is φ = 433344212.

The previous prime is 650016307. The next prime is 650016329. The reversal of 650016321 is 123610056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 650016321 - 2¹⁵ = 649983553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650016291 and 650016300.

It is not an unprimeable number, because it can be changed into a prime (650016329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108336051 + ... + 108336056.

It is an arithmetic number, because the mean of its divisors is an integer number (216672108).

Almost surely, 2^650016321 is an apocalyptic number.

It is an amenable number.

650016321 is a deficient number, since it is larger than the sum of its proper divisors (216672111).

650016321 is a wasteful number, since it uses less digits than its factorization.

650016321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216672110.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 650016321 is about 25495.4176470989. The cubic root of 650016321 is about 866.2463554794.

Adding to 650016321 its reverse (123610056), we get a palindrome (773626377).

The spelling of 650016321 in words is "six hundred fifty million, sixteen thousand, three hundred twenty-one".