555328656 has 160 divisors (see below), whose sum is σ = 1736496000. Its totient is φ = 169247232.

The previous prime is 555328643. The next prime is 555328673. The reversal of 555328656 is 656823555.

555328656 is a `hidden beast` number, since 55 + 532 + 8 + 65 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236866 + ... + 239198.

It is an arithmetic number, because the mean of its divisors is an integer number (10853100).

Almost surely, 2^555328656 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 555328656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868248000).

555328656 is an abundant number, since it is smaller than the sum of its proper divisors (1181167344).

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

555328656 is a wasteful number, since it uses less digits than its factorization.

555328656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398 (or 2386 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The square root of 555328656 is about 23565.4122815621. The cubic root of 555328656 is about 821.9587597190.

The spelling of 555328656 in words is "five hundred fifty-five million, three hundred twenty-eight thousand, six hundred fifty-six".