170216069 has 2 divisors, whose sum is σ = 170216070. Its totient is φ = 170216068.

The previous prime is 170216023. The next prime is 170216089. The reversal of 170216069 is 960612071.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119093569 + 51122500 = 10913^2 + 7150^2 .

It is a cyclic number.

It is not a de Polignac number, because 170216069 - 2²⁴ = 153438853 is a prime.

It is a super-2 number, since 2×170216069² = 57947020291625522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170216089) 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, 85108034 + 85108035.

It is an arithmetic number, because the mean of its divisors is an integer number (85108035).

Almost surely, 2^170216069 is an apocalyptic number.

It is an amenable number.

170216069 is a deficient number, since it is larger than the sum of its proper divisors (1).

170216069 is an equidigital number, since it uses as much as digits as its factorization.

170216069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 170216069 is about 13046.6880471635. The cubic root of 170216069 is about 554.2004220819.

It can be divided in two parts, 1702 and 16069, that added together give a palindrome (17771).

The spelling of 170216069 in words is "one hundred seventy million, two hundred sixteen thousand, sixty-nine".