775241617 has 2 divisors, whose sum is σ = 775241618. Its totient is φ = 775241616.

The previous prime is 775241603. The next prime is 775241647. The reversal of 775241617 is 716142577.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749445376 + 25796241 = 27376^2 + 5079^2 .

It is an emirp because it is prime and its reverse (716142577) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775241617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 775241617.

It is not a weakly prime, because it can be changed into another prime (775241647) 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, 387620808 + 387620809.

It is an arithmetic number, because the mean of its divisors is an integer number (387620809).

Almost surely, 2^775241617 is an apocalyptic number.

It is an amenable number.

775241617 is a deficient number, since it is larger than the sum of its proper divisors (1).

775241617 is an equidigital number, since it uses as much as digits as its factorization.

775241617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 775241617 is about 27843.1610453986. The cubic root of 775241617 is about 918.6407214991.

The spelling of 775241617 in words is "seven hundred seventy-five million, two hundred forty-one thousand, six hundred seventeen".