650313409 has 2 divisors, whose sum is σ = 650313410. Its totient is φ = 650313408.

The previous prime is 650313397. The next prime is 650313421. The reversal of 650313409 is 904313056.

It is a balanced prime because it is at equal distance from previous prime (650313397) and next prime (650313421).

It can be written as a sum of positive squares in only one way, i.e., 632673409 + 17640000 = 25153^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 650313409 - 2¹⁹ = 649789121 is a prime.

It is not a weakly prime, because it can be changed into another prime (650313509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325156704 + 325156705.

It is an arithmetic number, because the mean of its divisors is an integer number (325156705).

Almost surely, 2^650313409 is an apocalyptic number.

It is an amenable number.

650313409 is a deficient number, since it is larger than the sum of its proper divisors (1).

650313409 is an equidigital number, since it uses as much as digits as its factorization.

650313409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 650313409 is about 25501.2432834166. The cubic root of 650313409 is about 866.3783071406.

The spelling of 650313409 in words is "six hundred fifty million, three hundred thirteen thousand, four hundred nine".