556330320 has 360 divisors, whose sum is σ = 2342490696. Its totient is φ = 117282816.

The previous prime is 556330303. The next prime is 556330331. The reversal of 556330320 is 23033655.

556330320 is a `hidden beast` number, since 5 + 5 + 6 + 330 + 320 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14930496 + 541399824 = 3864^2 + 23268^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 458034 + ... + 459246.

Almost surely, 2^556330320 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 556330320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171245348).

556330320 is an abundant number, since it is smaller than the sum of its proper divisors (1786160376).

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

556330320 is a wasteful number, since it uses less digits than its factorization.

556330320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 556330320 is about 23586.6555492719. The cubic root of 556330320 is about 822.4526606223.

Adding to 556330320 its reverse (23033655), we get a palindrome (579363975).

The spelling of 556330320 in words is "five hundred fifty-six million, three hundred thirty thousand, three hundred twenty".