144640659 has 8 divisors (see below), whose sum is σ = 198066640. Its totient is φ = 93820896.

The previous prime is 144640633. The next prime is 144640663. The reversal of 144640659 is 956046441.

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

It is not a de Polignac number, because 144640659 - 2²⁰ = 143592083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144640609) 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 7 ways as a sum of consecutive naturals, for example, 651424 + ... + 651645.

It is an arithmetic number, because the mean of its divisors is an integer number (24758330).

Almost surely, 2^144640659 is an apocalyptic number.

144640659 is a deficient number, since it is larger than the sum of its proper divisors (53425981).

144640659 is a wasteful number, since it uses less digits than its factorization.

144640659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303109.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 144640659 is about 12026.6645001846. The cubic root of 144640659 is about 524.9244444557.

The spelling of 144640659 in words is "one hundred forty-four million, six hundred forty thousand, six hundred fifty-nine".