144688361 has 4 divisors (see below), whose sum is σ = 144819012. Its totient is φ = 144557712.

The previous prime is 144688301. The next prime is 144688367. The reversal of 144688361 is 163886441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72777961 + 71910400 = 8531^2 + 8480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144688361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144688367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63650 + ... + 65883.

It is an arithmetic number, because the mean of its divisors is an integer number (36204753).

Almost surely, 2^144688361 is an apocalyptic number.

It is an amenable number.

144688361 is a deficient number, since it is larger than the sum of its proper divisors (130651).

144688361 is a wasteful number, since it uses less digits than its factorization.

144688361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130650.

The product of its digits is 110592, while the sum is 41.

The square root of 144688361 is about 12028.6475133325. The cubic root of 144688361 is about 524.9821442151.

The spelling of 144688361 in words is "one hundred forty-four million, six hundred eighty-eight thousand, three hundred sixty-one".