497716691 has 2 divisors, whose sum is σ = 497716692. Its totient is φ = 497716690.

The previous prime is 497716649. The next prime is 497716697. The reversal of 497716691 is 196617794.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497716691 is a prime.

It is not a weakly prime, because it can be changed into another prime (497716697) 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, 248858345 + 248858346.

It is an arithmetic number, because the mean of its divisors is an integer number (248858346).

Almost surely, 2^497716691 is an apocalyptic number.

497716691 is a deficient number, since it is larger than the sum of its proper divisors (1).

497716691 is an equidigital number, since it uses as much as digits as its factorization.

497716691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 497716691 is about 22309.5650114474. The cubic root of 497716691 is about 792.4905065089.

The spelling of 497716691 in words is "four hundred ninety-seven million, seven hundred sixteen thousand, six hundred ninety-one".