144303661 has 8 divisors (see below), whose sum is σ = 145135800. Its totient is φ = 143474688.

The previous prime is 144303637. The next prime is 144303671. The reversal of 144303661 is 166303441.

144303661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40386025 + 103917636 = 6355^2 + 10194^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 144303661 - 2¹¹ = 144301613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144303611) 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, 249805 + ... + 250381.

It is an arithmetic number, because the mean of its divisors is an integer number (18141975).

Almost surely, 2^144303661 is an apocalyptic number.

It is an amenable number.

144303661 is a deficient number, since it is larger than the sum of its proper divisors (832139).

144303661 is an equidigital number, since it uses as much as digits as its factorization.

144303661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 144303661 is about 12012.6458784066. The cubic root of 144303661 is about 524.5164539400.

The spelling of 144303661 in words is "one hundred forty-four million, three hundred three thousand, six hundred sixty-one".