144224661 has 8 divisors (see below), whose sum is σ = 219770944. Its totient is φ = 82414080.

The previous prime is 144224659. The next prime is 144224671. The reversal of 144224661 is 166422441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144224661 - 2¹ = 144224659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144224621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3433900 + ... + 3433941.

It is an arithmetic number, because the mean of its divisors is an integer number (27471368).

Almost surely, 2^144224661 is an apocalyptic number.

It is an amenable number.

144224661 is a deficient number, since it is larger than the sum of its proper divisors (75546283).

144224661 is an equidigital number, since it uses as much as digits as its factorization.

144224661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867851.

The product of its digits is 9216, while the sum is 30.

The square root of 144224661 is about 12009.3572267628. The cubic root of 144224661 is about 524.4207197928.

The spelling of 144224661 in words is "one hundred forty-four million, two hundred twenty-four thousand, six hundred sixty-one".