487784556 has 72 divisors (see below), whose sum is σ = 1418245920. Its totient is φ = 138468096.

The previous prime is 487784543. The next prime is 487784567. The reversal of 487784556 is 655487784.

487784556 is a `hidden beast` number, since 4 + 8 + 7 + 7 + 84 + 556 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33400 + ... + 45728.

It is an arithmetic number, because the mean of its divisors is an integer number (19697860).

Almost surely, 2^487784556 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 487784556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709122960).

487784556 is an abundant number, since it is smaller than the sum of its proper divisors (930461364).

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

487784556 is a wasteful number, since it uses less digits than its factorization.

487784556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12503 (or 12498 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The square root of 487784556 is about 22085.8451502314. The cubic root of 487784556 is about 787.1835596346.

The spelling of 487784556 in words is "four hundred eighty-seven million, seven hundred eighty-four thousand, five hundred fifty-six".