144016661 has 2 divisors, whose sum is σ = 144016662. Its totient is φ = 144016660.

The previous prime is 144016657. The next prime is 144016667. The reversal of 144016661 is 166610441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95922436 + 48094225 = 9794^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 144016661 - 2² = 144016657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144016667) 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, 72008330 + 72008331.

It is an arithmetic number, because the mean of its divisors is an integer number (72008331).

Almost surely, 2^144016661 is an apocalyptic number.

It is an amenable number.

144016661 is a deficient number, since it is larger than the sum of its proper divisors (1).

144016661 is an equidigital number, since it uses as much as digits as its factorization.

144016661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 144016661 is about 12000.6941882543. The cubic root of 144016661 is about 524.1684929568.

The spelling of 144016661 in words is "one hundred forty-four million, sixteen thousand, six hundred sixty-one".