655355560 has 128 divisors (see below), whose sum is σ = 1592524800. Its totient is φ = 242161920.

The previous prime is 655355549. The next prime is 655355573. The reversal of 655355560 is 65553556.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5160217 + ... + 5160343.

It is an arithmetic number, because the mean of its divisors is an integer number (12441600).

Almost surely, 2^655355560 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 655355560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796262400).

655355560 is an abundant number, since it is smaller than the sum of its proper divisors (937169240).

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

655355560 is a wasteful number, since it uses less digits than its factorization.

655355560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 40.

The square root of 655355560 is about 25599.9132811031. The cubic root of 655355560 is about 868.6116757151.

The spelling of 655355560 in words is "six hundred fifty-five million, three hundred fifty-five thousand, five hundred sixty".