144868665 has 16 divisors (see below), whose sum is σ = 232198848. Its totient is φ = 77126976.

The previous prime is 144868639. The next prime is 144868681. The reversal of 144868665 is 566868441.

It is not a de Polignac number, because 144868665 - 2⁹ = 144868153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (14512428).

Almost surely, 2^144868665 is an apocalyptic number.

144868665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144868665 is a deficient number, since it is larger than the sum of its proper divisors (87330183).

144868665 is a wasteful number, since it uses less digits than its factorization.

144868665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17048.

The product of its digits is 1105920, while the sum is 48.

The square root of 144868665 is about 12036.1399543209. The cubic root of 144868665 is about 525.2001232524.

The spelling of 144868665 in words is "one hundred forty-four million, eight hundred sixty-eight thousand, six hundred sixty-five".