548665920 has 448 divisors, whose sum is σ = 2212116480. Its totient is φ = 126720000.

The previous prime is 548665891. The next prime is 548665927. The reversal of 548665920 is 29566845.

548665920 is a `hidden beast` number, since 54 + 8 + 6 + 6 + 592 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (548665927) 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 63 ways as a sum of consecutive naturals, for example, 2185795 + ... + 2186045.

It is an arithmetic number, because the mean of its divisors is an integer number (4937760).

Almost surely, 2^548665920 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 548665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106058240).

548665920 is an abundant number, since it is smaller than the sum of its proper divisors (1663450560).

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

548665920 is a wasteful number, since it uses less digits than its factorization.

548665920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 548665920 is about 23423.6188493580. The cubic root of 548665920 is about 818.6582857080.

The spelling of 548665920 in words is "five hundred forty-eight million, six hundred sixty-five thousand, nine hundred twenty".