144047681 has 8 divisors (see below), whose sum is σ = 152966880. Its totient is φ = 135178048.

The previous prime is 144047677. The next prime is 144047699. The reversal of 144047681 is 186740441.

144047681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144047681 - 2² = 144047677 is a prime.

It is a super-3 number, since 3×144047681³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144047671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6311 + ... + 18108.

It is an arithmetic number, because the mean of its divisors is an integer number (19120860).

Almost surely, 2^144047681 is an apocalyptic number.

It is an amenable number.

144047681 is a deficient number, since it is larger than the sum of its proper divisors (8919199).

144047681 is a wasteful number, since it uses less digits than its factorization.

144047681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24783.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 144047681 is about 12001.9865439018. The cubic root of 144047681 is about 524.2061241107.

The spelling of 144047681 in words is "one hundred forty-four million, forty-seven thousand, six hundred eighty-one".