654144140 has 48 divisors (see below), whose sum is σ = 1488025728. Its totient is φ = 240117504.

The previous prime is 654144119. The next prime is 654144149. The reversal of 654144140 is 41441456.

It is not an unprimeable number, because it can be changed into a prime (654144149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37709 + ... + 52251.

It is an arithmetic number, because the mean of its divisors is an integer number (31000536).

Almost surely, 2^654144140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654144140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744012864).

654144140 is an abundant number, since it is smaller than the sum of its proper divisors (833881588).

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

654144140 is a wasteful number, since it uses less digits than its factorization.

654144140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14738 (or 14736 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 654144140 is about 25576.2417098369. The cubic root of 654144140 is about 868.0761381392.

Adding to 654144140 its reverse (41441456), we get a palindrome (695585596).

The spelling of 654144140 in words is "six hundred fifty-four million, one hundred forty-four thousand, one hundred forty".