144243664 has 10 divisors (see below), whose sum is σ = 279472130. Its totient is φ = 72121824.

The previous prime is 144243599. The next prime is 144243667. The reversal of 144243664 is 466342441.

144243664 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 only one way, i.e., 143808064 + 435600 = 11992^2 + 660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144243667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4507599 + ... + 4507630.

It is an arithmetic number, because the mean of its divisors is an integer number (27947213).

Almost surely, 2^144243664 is an apocalyptic number.

It is an amenable number.

144243664 is a deficient number, since it is larger than the sum of its proper divisors (135228466).

144243664 is an equidigital number, since it uses as much as digits as its factorization.

144243664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9015237 (or 9015231 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 144243664 is about 12010.1483754365. The cubic root of 144243664 is about 524.4437512892.

The spelling of 144243664 in words is "one hundred forty-four million, two hundred forty-three thousand, six hundred sixty-four".