655985304 has 192 divisors, whose sum is σ = 2011595040. Its totient is φ = 199065600.

The previous prime is 655985303. The next prime is 655985311. The reversal of 655985304 is 403589556.

655985304 is a `hidden beast` number, since 6 + 5 + 598 + 53 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 655985304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655985303) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2552344 + ... + 2552600.

Almost surely, 2^655985304 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 655985304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005797520).

655985304 is an abundant number, since it is smaller than the sum of its proper divisors (1355609736).

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

655985304 is a wasteful number, since it uses less digits than its factorization.

655985304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 655985304 is about 25612.2100569240. The cubic root of 655985304 is about 868.8898086398.

The spelling of 655985304 in words is "six hundred fifty-five million, nine hundred eighty-five thousand, three hundred four".