654514660 has 72 divisors (see below), whose sum is σ = 1460342520. Its totient is φ = 246371328.

The previous prime is 654514607. The next prime is 654514681. The reversal of 654514660 is 66415456.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 652087296 = 1558^2 + 25536^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1942012 + ... + 1942348.

It is an arithmetic number, because the mean of its divisors is an integer number (20282535).

Almost surely, 2^654514660 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 654514660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730171260).

654514660 is an abundant number, since it is smaller than the sum of its proper divisors (805827860).

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

654514660 is a wasteful number, since it uses less digits than its factorization.

654514660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 654514660 is about 25583.4841255057. The cubic root of 654514660 is about 868.2400056227.

The spelling of 654514660 in words is "six hundred fifty-four million, five hundred fourteen thousand, six hundred sixty".