556504398 has 64 divisors (see below), whose sum is σ = 1275704640. Its totient is φ = 179712000.

The previous prime is 556504387. The next prime is 556504447. The reversal of 556504398 is 893405655.

556504398 is a `hidden beast` number, since 5 + 56 + 504 + 3 + 98 = 666.

It is a congruent number.

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, 346798 + ... + 348398.

It is an arithmetic number, because the mean of its divisors is an integer number (19932885).

Almost surely, 2^556504398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556504398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637852320).

556504398 is an abundant number, since it is smaller than the sum of its proper divisors (719200242).

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

556504398 is a wasteful number, since it uses less digits than its factorization.

556504398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 1804 counting only the distinct ones).

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

The square root of 556504398 is about 23590.3454404551. The cubic root of 556504398 is about 822.5384345944.

The spelling of 556504398 in words is "five hundred fifty-six million, five hundred four thousand, three hundred ninety-eight".