247716017 has 2 divisors, whose sum is σ = 247716018. Its totient is φ = 247716016.

The previous prime is 247715987. The next prime is 247716019. The reversal of 247716017 is 710617742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246615616 + 1100401 = 15704^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 247716017 - 2¹² = 247711921 is a prime.

It is a super-2 number, since 2×247716017² = 122726450156688578, which contains 22 as substring.

Together with 247716019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (247716019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123858008 + 123858009.

It is an arithmetic number, because the mean of its divisors is an integer number (123858009).

Almost surely, 2^247716017 is an apocalyptic number.

It is an amenable number.

247716017 is a deficient number, since it is larger than the sum of its proper divisors (1).

247716017 is an equidigital number, since it uses as much as digits as its factorization.

247716017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 247716017 is about 15738.9966961049. The cubic root of 247716017 is about 628.0362274056.

The spelling of 247716017 in words is "two hundred forty-seven million, seven hundred sixteen thousand, seventeen".