144706217 has 2 divisors, whose sum is σ = 144706218. Its totient is φ = 144706216.

The previous prime is 144706207. The next prime is 144706231. The reversal of 144706217 is 712607441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 25110121 = 10936^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 144706217 - 2¹² = 144702121 is a prime.

It is equal to p_8163077 and since 144706217 and 8163077 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (144706207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72353108 + 72353109.

It is an arithmetic number, because the mean of its divisors is an integer number (72353109).

Almost surely, 2^144706217 is an apocalyptic number.

It is an amenable number.

144706217 is a deficient number, since it is larger than the sum of its proper divisors (1).

144706217 is an equidigital number, since it uses as much as digits as its factorization.

144706217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 144706217 is about 12029.3897185186. The cubic root of 144706217 is about 525.0037393536.

The spelling of 144706217 in words is "one hundred forty-four million, seven hundred six thousand, two hundred seventeen".