144689585 has 8 divisors (see below), whose sum is σ = 173912616. Its totient is φ = 115561600.

The previous prime is 144689581. The next prime is 144689593. The reversal of 144689585 is 585986441.

It can be written as a sum of positive squares in 4 ways, for example, as 11587216 + 133102369 = 3404^2 + 11537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144689585 - 2² = 144689581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144689581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20366 + ... + 26535.

It is an arithmetic number, because the mean of its divisors is an integer number (21739077).

Almost surely, 2^144689585 is an apocalyptic number.

It is an amenable number.

144689585 is a deficient number, since it is larger than the sum of its proper divisors (29223031).

144689585 is an equidigital number, since it uses as much as digits as its factorization.

144689585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47523.

The product of its digits is 1382400, while the sum is 50.

The square root of 144689585 is about 12028.6983917629. The cubic root of 144689585 is about 524.9836245837.

The spelling of 144689585 in words is "one hundred forty-four million, six hundred eighty-nine thousand, five hundred eighty-five".