497663609 has 2 divisors, whose sum is σ = 497663610. Its totient is φ = 497663608.

The previous prime is 497663603. The next prime is 497663633. The reversal of 497663609 is 906366794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397603600 + 100060009 = 19940^2 + 10003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497663609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (497663603) 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, 248831804 + 248831805.

It is an arithmetic number, because the mean of its divisors is an integer number (248831805).

Almost surely, 2^497663609 is an apocalyptic number.

It is an amenable number.

497663609 is a deficient number, since it is larger than the sum of its proper divisors (1).

497663609 is an equidigital number, since it uses as much as digits as its factorization.

497663609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The square root of 497663609 is about 22308.3753106317. The cubic root of 497663609 is about 792.4623321965.

The spelling of 497663609 in words is "four hundred ninety-seven million, six hundred sixty-three thousand, six hundred nine".