654641140 has 12 divisors (see below), whose sum is σ = 1374746436. Its totient is φ = 261856448.

The previous prime is 654641131. The next prime is 654641147. The reversal of 654641140 is 41146456.

It can be written as a sum of positive squares in 2 ways, for example, as 297355536 + 357285604 = 17244^2 + 18902^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654641147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16366009 + ... + 16366048.

It is an arithmetic number, because the mean of its divisors is an integer number (114562203).

Almost surely, 2^654641140 is an apocalyptic number.

It is an amenable number.

654641140 is an abundant number, since it is smaller than the sum of its proper divisors (720105296).

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

654641140 is a wasteful number, since it uses less digits than its factorization.

654641140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32732066 (or 32732064 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 654641140 is about 25585.9559133522. The cubic root of 654641140 is about 868.2959289552.

Adding to 654641140 its reverse (41146456), we get a palindrome (695787596).

The spelling of 654641140 in words is "six hundred fifty-four million, six hundred forty-one thousand, one hundred forty".