650738321 has 2 divisors, whose sum is σ = 650738322. Its totient is φ = 650738320.

The previous prime is 650738303. The next prime is 650738323. The reversal of 650738321 is 123837056.

650738321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479128321 + 171610000 = 21889^2 + 13100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650738321 is a prime.

Together with 650738323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650738323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325369160 + 325369161.

It is an arithmetic number, because the mean of its divisors is an integer number (325369161).

Almost surely, 2^650738321 is an apocalyptic number.

It is an amenable number.

650738321 is a deficient number, since it is larger than the sum of its proper divisors (1).

650738321 is an equidigital number, since it uses as much as digits as its factorization.

650738321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 650738321 is about 25509.5731246134. The cubic root of 650738321 is about 866.5669620179.

The spelling of 650738321 in words is "six hundred fifty million, seven hundred thirty-eight thousand, three hundred twenty-one".