144278666 has 16 divisors (see below), whose sum is σ = 260352960. Its totient is φ = 58579200.

The previous prime is 144278653. The next prime is 144278669. The reversal of 144278666 is 666872441.

It is not an unprimeable number, because it can be changed into a prime (144278669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270935 + ... + 271466.

It is an arithmetic number, because the mean of its divisors is an integer number (16272060).

Almost surely, 2^144278666 is an apocalyptic number.

144278666 is a deficient number, since it is larger than the sum of its proper divisors (116074294).

144278666 is a wasteful number, since it uses less digits than its factorization.

144278666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542429.

The product of its digits is 387072, while the sum is 44.

The square root of 144278666 is about 12011.6054713764. The cubic root of 144278666 is about 524.4861681623.

It can be divided in two parts, 1442 and 78666, that added together give a palindrome (80108).

The spelling of 144278666 in words is "one hundred forty-four million, two hundred seventy-eight thousand, six hundred sixty-six".