144520685 has 8 divisors (see below), whose sum is σ = 174190176. Its totient is φ = 115106320.

The previous prime is 144520657. The next prime is 144520703. The reversal of 144520685 is 586025441.

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

It is not a de Polignac number, because 144520685 - 2²⁶ = 77411821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62531 + ... + 64800.

It is an arithmetic number, because the mean of its divisors is an integer number (21773772).

Almost surely, 2^144520685 is an apocalyptic number.

It is an amenable number.

144520685 is a deficient number, since it is larger than the sum of its proper divisors (29669491).

144520685 is a wasteful number, since it uses less digits than its factorization.

144520685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127563.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 144520685 is about 12021.6756319575. The cubic root of 144520685 is about 524.7792692650.

The spelling of 144520685 in words is "one hundred forty-four million, five hundred twenty thousand, six hundred eighty-five".