556980440 has 64 divisors (see below), whose sum is σ = 1326780000. Its totient is φ = 209848320.

The previous prime is 556980427. The next prime is 556980481. The reversal of 556980440 is 44089655.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135536 + ... + 139584.

Almost surely, 2^556980440 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 556980440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663390000).

556980440 is an abundant number, since it is smaller than the sum of its proper divisors (769799560).

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

556980440 is a wasteful number, since it uses less digits than its factorization.

556980440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260 (or 4256 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 556980440 is about 23600.4330468744. The cubic root of 556980440 is about 822.7729048857.

The spelling of 556980440 in words is "five hundred fifty-six million, nine hundred eighty thousand, four hundred forty".