144621 has 6 divisors (see below), whose sum is σ = 208910. Its totient is φ = 96408.

The previous prime is 144611. The next prime is 144629. The reversal of 144621 is 126441.

144621 is a `hidden beast` number, since 1 + 44 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 35721 = 330^2 + 189^2 .

It is not a de Polignac number, because 144621 - 2⁵ = 144589 is a prime.

It is a Duffinian number.

It is a Curzon number.

144621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 144594 and 144603.

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 144621.

It is not an unprimeable number, because it can be changed into a prime (144629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8026 + ... + 8043.

2¹⁴⁴⁶²¹ is an apocalyptic number.

It is an amenable number.

144621 is a deficient number, since it is larger than the sum of its proper divisors (64289).

144621 is a wasteful number, since it uses less digits than its factorization.

144621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075 (or 16072 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 144621 is about 380.2906782975. The cubic root of 144621 is about 52.4900661477.

The spelling of 144621 in words is "one hundred forty-four thousand, six hundred twenty-one".