144723664 has 10 divisors (see below), whose sum is σ = 280402130. Its totient is φ = 72361824.

The previous prime is 144723629. The next prime is 144723673. The reversal of 144723664 is 466327441.

144723664 is digitally balanced in base 3, 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., 124545600 + 20178064 = 11160^2 + 4492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4522599 + ... + 4522630.

It is an arithmetic number, because the mean of its divisors is an integer number (28040213).

Almost surely, 2^144723664 is an apocalyptic number.

It is an amenable number.

144723664 is a deficient number, since it is larger than the sum of its proper divisors (135678466).

144723664 is an equidigital number, since it uses as much as digits as its factorization.

144723664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045237 (or 9045231 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 144723664 is about 12030.1148789195. The cubic root of 144723664 is about 525.0248381295.

The spelling of 144723664 in words is "one hundred forty-four million, seven hundred twenty-three thousand, six hundred sixty-four".