144705 has 16 divisors (see below), whose sum is σ = 252864. Its totient is φ = 70080.

The previous prime is 144701. The next prime is 144709. The reversal of 144705 is 507441.

It is an interprime number because it is at equal distance from previous prime (144701) and next prime (144709).

It is not a de Polignac number, because 144705 - 2² = 144701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 603.

It is an arithmetic number, because the mean of its divisors is an integer number (15804).

2¹⁴⁴⁷⁰⁵ is an apocalyptic number.

144705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144705 is a deficient number, since it is larger than the sum of its proper divisors (108159).

144705 is a wasteful number, since it uses less digits than its factorization.

144705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 144705 is about 380.4011040993. The cubic root of 144705 is about 52.5002267564.

The spelling of 144705 in words is "one hundred forty-four thousand, seven hundred five".