650820539 has 2 divisors, whose sum is σ = 650820540. Its totient is φ = 650820538.

The previous prime is 650820487. The next prime is 650820553. The reversal of 650820539 is 935028056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650820539 - 2⁸ = 650820283 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (650820439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325410269 + 325410270.

It is an arithmetic number, because the mean of its divisors is an integer number (325410270).

Almost surely, 2^650820539 is an apocalyptic number.

650820539 is a deficient number, since it is larger than the sum of its proper divisors (1).

650820539 is an equidigital number, since it uses as much as digits as its factorization.

650820539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 650820539 is about 25511.1845863731. The cubic root of 650820539 is about 866.6034561558.

The spelling of 650820539 in words is "six hundred fifty million, eight hundred twenty thousand, five hundred thirty-nine".