650566513 has 2 divisors, whose sum is σ = 650566514. Its totient is φ = 650566512.

The previous prime is 650566457. The next prime is 650566559. The reversal of 650566513 is 315665056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573267249 + 77299264 = 23943^2 + 8792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650566513 is a prime.

It is not a weakly prime, because it can be changed into another prime (650566913) 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, 325283256 + 325283257.

It is an arithmetic number, because the mean of its divisors is an integer number (325283257).

Almost surely, 2^650566513 is an apocalyptic number.

It is an amenable number.

650566513 is a deficient number, since it is larger than the sum of its proper divisors (1).

650566513 is an equidigital number, since it uses as much as digits as its factorization.

650566513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 650566513 is about 25506.2053822202. The cubic root of 650566513 is about 866.4906916050.

The spelling of 650566513 in words is "six hundred fifty million, five hundred sixty-six thousand, five hundred thirteen".