172067717 has 2 divisors, whose sum is σ = 172067718. Its totient is φ = 172067716.

The previous prime is 172067713. The next prime is 172067773. The reversal of 172067717 is 717760271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126922756 + 45144961 = 11266^2 + 6719^2 .

It is a cyclic number.

It is not a de Polignac number, because 172067717 - 2² = 172067713 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172067713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86033858 + 86033859.

It is an arithmetic number, because the mean of its divisors is an integer number (86033859).

Almost surely, 2^172067717 is an apocalyptic number.

It is an amenable number.

172067717 is a deficient number, since it is larger than the sum of its proper divisors (1).

172067717 is an equidigital number, since it uses as much as digits as its factorization.

172067717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28812, while the sum is 38.

The square root of 172067717 is about 13117.4584809711. The cubic root of 172067717 is about 556.2027504873.

The spelling of 172067717 in words is "one hundred seventy-two million, sixty-seven thousand, seven hundred seventeen".