655342717 has 2 divisors, whose sum is σ = 655342718. Its totient is φ = 655342716.

The previous prime is 655342711. The next prime is 655342739. The reversal of 655342717 is 717243556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540981081 + 114361636 = 23259^2 + 10694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655342717 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655342717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655342711) 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, 327671358 + 327671359.

It is an arithmetic number, because the mean of its divisors is an integer number (327671359).

Almost surely, 2^655342717 is an apocalyptic number.

It is an amenable number.

655342717 is a deficient number, since it is larger than the sum of its proper divisors (1).

655342717 is an equidigital number, since it uses as much as digits as its factorization.

655342717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 655342717 is about 25599.6624391807. The cubic root of 655342717 is about 868.6060016183.

The spelling of 655342717 in words is "six hundred fifty-five million, three hundred forty-two thousand, seven hundred seventeen".