144306661 has 2 divisors, whose sum is σ = 144306662. Its totient is φ = 144306660.

The previous prime is 144306629. The next prime is 144306713. The reversal of 144306661 is 166603441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110376036 + 33930625 = 10506^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 144306661 - 2⁵ = 144306629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144306361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72153330 + 72153331.

It is an arithmetic number, because the mean of its divisors is an integer number (72153331).

Almost surely, 2^144306661 is an apocalyptic number.

It is an amenable number.

144306661 is a deficient number, since it is larger than the sum of its proper divisors (1).

144306661 is an equidigital number, since it uses as much as digits as its factorization.

144306661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 144306661 is about 12012.7707461684. The cubic root of 144306661 is about 524.5200887252.

The spelling of 144306661 in words is "one hundred forty-four million, three hundred six thousand, six hundred sixty-one".