654560660 has 72 divisors (see below), whose sum is σ = 1536708096. Its totient is φ = 233850240.

The previous prime is 654560651. The next prime is 654560713. The reversal of 654560660 is 66065456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101657 + ... + 107903.

It is an arithmetic number, because the mean of its divisors is an integer number (21343168).

Almost surely, 2^654560660 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 654560660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768354048).

654560660 is an abundant number, since it is smaller than the sum of its proper divisors (882147436).

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

654560660 is a wasteful number, since it uses less digits than its factorization.

654560660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313 (or 6298 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 654560660 is about 25584.3831272126. The cubic root of 654560660 is about 868.2603454292.

The spelling of 654560660 in words is "six hundred fifty-four million, five hundred sixty thousand, six hundred sixty".