144563746 has 4 divisors (see below), whose sum is σ = 216845622. Its totient is φ = 72281872.

The previous prime is 144563743. The next prime is 144563813. The reversal of 144563746 is 647365441.

144563746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143640225 + 923521 = 11985^2 + 961^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 144563699 and 144563708.

It is not an unprimeable number, because it can be changed into a prime (144563743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36140935 + ... + 36140938.

Almost surely, 2^144563746 is an apocalyptic number.

144563746 is a deficient number, since it is larger than the sum of its proper divisors (72281876).

144563746 is an equidigital number, since it uses as much as digits as its factorization.

144563746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72281875.

The product of its digits is 241920, while the sum is 40.

The square root of 144563746 is about 12023.4664718624. The cubic root of 144563746 is about 524.8313847024.

The spelling of 144563746 in words is "one hundred forty-four million, five hundred sixty-three thousand, seven hundred forty-six".