144661 has 4 divisors (see below), whose sum is σ = 157824. Its totient is φ = 131500.

The previous prime is 144659. The next prime is 144667. The reversal of 144661 is 166441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166441 = 11 ⋅15131.

It is a cyclic number.

It is not a de Polignac number, because 144661 - 2¹ = 144659 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (39456).

2¹⁴⁴⁶⁶¹ is an apocalyptic number.

144661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144661 is a deficient number, since it is larger than the sum of its proper divisors (13163).

144661 is a wasteful number, since it uses less digits than its factorization.

144661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162.

The product of its digits is 576, while the sum is 22.

The square root of 144661 is about 380.3432660111. The cubic root of 144661 is about 52.4949050233.

The spelling of 144661 in words is "one hundred forty-four thousand, six hundred sixty-one".