144861966 has 64 divisors (see below), whose sum is σ = 340761600. Its totient is φ = 45489600.

The previous prime is 144861961. The next prime is 144862009. The reversal of 144861966 is 669168441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144861961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277786 + ... + 278306.

It is an arithmetic number, because the mean of its divisors is an integer number (5324400).

Almost surely, 2^144861966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144861966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170380800).

144861966 is an abundant number, since it is smaller than the sum of its proper divisors (195899634).

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

144861966 is a wasteful number, since it uses less digits than its factorization.

144861966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 144861966 is about 12035.8616642100. The cubic root of 144861966 is about 525.1920277132.

The spelling of 144861966 in words is "one hundred forty-four million, eight hundred sixty-one thousand, nine hundred sixty-six".