650949617 has 2 divisors, whose sum is σ = 650949618. Its totient is φ = 650949616.

The previous prime is 650949589. The next prime is 650949623. The reversal of 650949617 is 716949056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649434256 + 1515361 = 25484^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 650949617 - 2¹⁸ = 650687473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650949697) 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 as a sum of consecutive naturals, namely, 325474808 + 325474809.

It is an arithmetic number, because the mean of its divisors is an integer number (325474809).

Almost surely, 2^650949617 is an apocalyptic number.

It is an amenable number.

650949617 is a deficient number, since it is larger than the sum of its proper divisors (1).

650949617 is an equidigital number, since it uses as much as digits as its factorization.

650949617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 650949617 is about 25513.7142925134. The cubic root of 650949617 is about 866.6607438616.

The spelling of 650949617 in words is "six hundred fifty million, nine hundred forty-nine thousand, six hundred seventeen".