556341660 has 288 divisors, whose sum is σ = 2151152640. Its totient is φ = 113301504.

The previous prime is 556341649. The next prime is 556341671. The reversal of 556341660 is 66143655.

556341660 is a `hidden beast` number, since 5 + 5 + 634 + 16 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (556341649) and next prime (556341671).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 406297 + ... + 407663.

It is an arithmetic number, because the mean of its divisors is an integer number (7469280).

Almost surely, 2^556341660 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 556341660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075576320).

556341660 is an abundant number, since it is smaller than the sum of its proper divisors (1594810980).

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

556341660 is a wasteful number, since it uses less digits than its factorization.

556341660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 556341660 is about 23586.8959382111. The cubic root of 556341660 is about 822.4582487591.

The spelling of 556341660 in words is "five hundred fifty-six million, three hundred forty-one thousand, six hundred sixty".