144637 has 4 divisors (see below), whose sum is σ = 147420. Its totient is φ = 141856.

The previous prime is 144629. The next prime is 144659. The reversal of 144637 is 736441.

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 125316 + 19321 = 354^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 144637 - 2³ = 144629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144637.

It is not an unprimeable number, because it can be changed into a prime (144667) 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 in 3 ways as a sum of consecutive naturals, for example, 1312 + ... + 1417.

It is an arithmetic number, because the mean of its divisors is an integer number (36855).

2¹⁴⁴⁶³⁷ is an apocalyptic number.

It is an amenable number.

144637 is a deficient number, since it is larger than the sum of its proper divisors (2783).

144637 is an equidigital number, since it uses as much as digits as its factorization.

144637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its digits is 2016, while the sum is 25.

The square root of 144637 is about 380.3117142556. The cubic root of 144637 is about 52.4920018050.

The spelling of 144637 in words is "one hundred forty-four thousand, six hundred thirty-seven".