144578689 has 2 divisors, whose sum is σ = 144578690. Its totient is φ = 144578688.

The previous prime is 144578671. The next prime is 144578701. The reversal of 144578689 is 986875441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104040000 + 40538689 = 10200^2 + 6367^2 .

It is a cyclic number.

It is not a de Polignac number, because 144578689 - 2⁷ = 144578561 is a prime.

It is not a weakly prime, because it can be changed into another prime (144578639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72289344 + 72289345.

It is an arithmetic number, because the mean of its divisors is an integer number (72289345).

Almost surely, 2^144578689 is an apocalyptic number.

It is an amenable number.

144578689 is a deficient number, since it is larger than the sum of its proper divisors (1).

144578689 is an equidigital number, since it uses as much as digits as its factorization.

144578689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The square root of 144578689 is about 12024.0878656138. The cubic root of 144578689 is about 524.8494673485.

The spelling of 144578689 in words is "one hundred forty-four million, five hundred seventy-eight thousand, six hundred eighty-nine".