144668705 has 16 divisors (see below), whose sum is σ = 182652624. Its totient is φ = 109854720.

The previous prime is 144668687. The next prime is 144668729. The reversal of 144668705 is 507866441.

It can be written as a sum of positive squares in 8 ways, for example, as 28718881 + 115949824 = 5359^2 + 10768^2 .

It is not a de Polignac number, because 144668705 - 2¹² = 144664609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1952 + ... + 17121.

It is an arithmetic number, because the mean of its divisors is an integer number (11415789).

Almost surely, 2^144668705 is an apocalyptic number.

It is an amenable number.

144668705 is a deficient number, since it is larger than the sum of its proper divisors (37983919).

144668705 is a wasteful number, since it uses less digits than its factorization.

144668705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19156.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 144668705 is about 12027.8304361177. The cubic root of 144668705 is about 524.9583700928.

The spelling of 144668705 in words is "one hundred forty-four million, six hundred sixty-eight thousand, seven hundred five".