144605 has 4 divisors (see below), whose sum is σ = 173532. Its totient is φ = 115680.

The previous prime is 144593. The next prime is 144611. The reversal of 144605 is 506441.

144605 = T₂₃₈ + T₂₃₉ + ... + T₂₄₂.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80089 + 64516 = 283^2 + 254^2 .

It is not a de Polignac number, because 144605 - 2⁴ = 144589 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14456 + ... + 14465.

It is an arithmetic number, because the mean of its divisors is an integer number (43383).

2¹⁴⁴⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

144605 is a deficient number, since it is larger than the sum of its proper divisors (28927).

144605 is an equidigital number, since it uses as much as digits as its factorization.

144605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28926.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 144605 is about 380.2696411758. The cubic root of 144605 is about 52.4881303476.

The spelling of 144605 in words is "one hundred forty-four thousand, six hundred five".