556220736 has 112 divisors (see below), whose sum is σ = 1651894080. Its totient is φ = 183513600.

The previous prime is 556220729. The next prime is 556220747. The reversal of 556220736 is 637022655.

It is a happy number.

556220736 is a `hidden beast` number, since 5 + 562 + 20 + 73 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 556220736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172935 + ... + 176121.

Almost surely, 2^556220736 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 556220736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825947040).

556220736 is an abundant number, since it is smaller than the sum of its proper divisors (1095673344).

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

556220736 is a wasteful number, since it uses less digits than its factorization.

556220736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309 (or 3293 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 556220736 is about 23584.3324264224. The cubic root of 556220736 is about 822.3986557938.

The spelling of 556220736 in words is "five hundred fifty-six million, two hundred twenty thousand, seven hundred thirty-six".