556641580 has 48 divisors (see below), whose sum is σ = 1316367360. Its totient is φ = 195883200.

The previous prime is 556641551. The next prime is 556641583. The reversal of 556641580 is 85146655.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (556641583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33990 + ... + 47629.

It is an arithmetic number, because the mean of its divisors is an integer number (27424320).

Almost surely, 2^556641580 is an apocalyptic number.

It is an amenable number.

556641580 is an abundant number, since it is smaller than the sum of its proper divisors (759725780).

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

556641580 is a wasteful number, since it uses less digits than its factorization.

556641580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81670 (or 81668 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 556641580 is about 23593.2528490668. The cubic root of 556641580 is about 822.6060160891.

The spelling of 556641580 in words is "five hundred fifty-six million, six hundred forty-one thousand, five hundred eighty".