655983360 has 504 divisors, whose sum is σ = 2546864880. Its totient is φ = 161243136.

The previous prime is 655983353. The next prime is 655983389. The reversal of 655983360 is 63389556.

655983360 is a `hidden beast` number, since 6 + 559 + 8 + 33 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 17729262 + ... + 17729298.

Almost surely, 2^655983360 is an apocalyptic number.

655983360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655983360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273432440).

655983360 is an abundant number, since it is smaller than the sum of its proper divisors (1890881520).

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

655983360 is an equidigital number, since it uses as much as digits as its factorization.

655983360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 655983360 is about 25612.1721062467. The cubic root of 655983360 is about 868.8889503262. Note that the first 3 decimals are identical.

The spelling of 655983360 in words is "six hundred fifty-five million, nine hundred eighty-three thousand, three hundred sixty".