144316661 has 2 divisors, whose sum is σ = 144316662. Its totient is φ = 144316660.

The previous prime is 144316657. The next prime is 144316691. The reversal of 144316661 is 166613441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82992100 + 61324561 = 9110^2 + 7831^2 .

It is an emirp because it is prime and its reverse (166613441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144316661 - 2² = 144316657 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 (144316691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72158330 + 72158331.

It is an arithmetic number, because the mean of its divisors is an integer number (72158331).

Almost surely, 2^144316661 is an apocalyptic number.

It is an amenable number.

144316661 is a deficient number, since it is larger than the sum of its proper divisors (1).

144316661 is an equidigital number, since it uses as much as digits as its factorization.

144316661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 144316661 is about 12013.1869626673. The cubic root of 144316661 is about 524.5322043123.

The spelling of 144316661 in words is "one hundred forty-four million, three hundred sixteen thousand, six hundred sixty-one".