650643013 has 2 divisors, whose sum is σ = 650643014. Its totient is φ = 650643012.

The previous prime is 650642969. The next prime is 650643017. The reversal of 650643013 is 310346056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349203969 + 301439044 = 18687^2 + 17362^2 .

It is a cyclic number.

It is not a de Polignac number, because 650643013 - 2¹⁷ = 650511941 is a prime.

It is equal to p_33825223 and since 650643013 and 33825223 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650643017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325321506 + 325321507.

It is an arithmetic number, because the mean of its divisors is an integer number (325321507).

Almost surely, 2^650643013 is an apocalyptic number.

It is an amenable number.

650643013 is a deficient number, since it is larger than the sum of its proper divisors (1).

650643013 is an equidigital number, since it uses as much as digits as its factorization.

650643013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 650643013 is about 25507.7049732037. The cubic root of 650643013 is about 866.5246537690.

Adding to 650643013 its reverse (310346056), we get a palindrome (960989069).

The spelling of 650643013 in words is "six hundred fifty million, six hundred forty-three thousand, thirteen".