144145665 has 24 divisors (see below), whose sum is σ = 250174080. Its totient is φ = 76778784.

The previous prime is 144145649. The next prime is 144145667. The reversal of 144145665 is 566541441.

144145665 is a `hidden beast` number, since 144 + 1 + 456 + 65 = 666.

It is not a de Polignac number, because 144145665 - 2⁴ = 144145649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144145667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45214 + ... + 48296.

It is an arithmetic number, because the mean of its divisors is an integer number (10423920).

Almost surely, 2^144145665 is an apocalyptic number.

144145665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144145665 is a deficient number, since it is larger than the sum of its proper divisors (106028415).

144145665 is a wasteful number, since it uses less digits than its factorization.

144145665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4130 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 144145665 is about 12006.0678408878. The cubic root of 144145665 is about 524.3249555298.

The spelling of 144145665 in words is "one hundred forty-four million, one hundred forty-five thousand, six hundred sixty-five".