556589640 has 32 divisors (see below), whose sum is σ = 1669769280. Its totient is φ = 148423872.

The previous prime is 556589611. The next prime is 556589687. The reversal of 556589640 is 46985655.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 556589640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319004 + ... + 2319243.

It is an arithmetic number, because the mean of its divisors is an integer number (52180290).

Almost surely, 2^556589640 is an apocalyptic number.

It is an amenable number.

556589640 is an abundant number, since it is smaller than the sum of its proper divisors (1113179640).

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

556589640 is a wasteful number, since it uses less digits than its factorization.

556589640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638261 (or 4638257 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 556589640 is about 23592.1520849625. The cubic root of 556589640 is about 822.5804296154.

The spelling of 556589640 in words is "five hundred fifty-six million, five hundred eighty-nine thousand, six hundred forty".