144471666 has 32 divisors (see below), whose sum is σ = 292795776. Its totient is φ = 47520000.

The previous prime is 144471637. The next prime is 144471667. The reversal of 144471666 is 666174441.

144471666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (144471667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163546 + ... + 164426.

It is an arithmetic number, because the mean of its divisors is an integer number (9149868).

Almost surely, 2^144471666 is an apocalyptic number.

144471666 is an abundant number, since it is smaller than the sum of its proper divisors (148324110).

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

144471666 is a wasteful number, since it uses less digits than its factorization.

144471666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its digits is 96768, while the sum is 39.

The square root of 144471666 is about 12019.6366833611. The cubic root of 144471666 is about 524.7199304376.

The spelling of 144471666 in words is "one hundred forty-four million, four hundred seventy-one thousand, six hundred sixty-six".