556222656 has 112 divisors (see below), whose sum is σ = 1614025728. Its totient is φ = 167654400.

The previous prime is 556222637. The next prime is 556222669. The reversal of 556222656 is 656222655.

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, 470386 + ... + 471566.

It is an arithmetic number, because the mean of its divisors is an integer number (14410944).

Almost surely, 2^556222656 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 556222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807012864).

556222656 is an abundant number, since it is smaller than the sum of its proper divisors (1057803072).

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

556222656 is a wasteful number, since it uses less digits than its factorization.

556222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1420 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 556222656 is about 23584.3731313766. The cubic root of 556222656 is about 822.3996020629.

Subtracting 556222656 from its reverse (656222655), we obtain a palindrome (99999999).

The spelling of 556222656 in words is "five hundred fifty-six million, two hundred twenty-two thousand, six hundred fifty-six".