144644646 has 16 divisors (see below), whose sum is σ = 289560384. Its totient is φ = 48169704.

The previous prime is 144644641. The next prime is 144644657. The reversal of 144644646 is 646446441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144644641) 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, 3996 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (18097524).

Almost surely, 2^144644646 is an apocalyptic number.

144644646 is an abundant number, since it is smaller than the sum of its proper divisors (144915738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144644646 is a wasteful number, since it uses less digits than its factorization.

144644646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595.

The product of its digits is 221184, while the sum is 39.

The square root of 144644646 is about 12026.8302557241. The cubic root of 144644646 is about 524.9292675683.

It can be divided in two parts, 14464 and 4646, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 144644646 in words is "one hundred forty-four million, six hundred forty-four thousand, six hundred forty-six".