556222464 has 240 divisors, whose sum is σ = 1902700800. Its totient is φ = 158588928.

The previous prime is 556222427. The next prime is 556222477. The reversal of 556222464 is 464222655.

556222464 is a `hidden beast` number, since 5 + 5 + 622 + 24 + 6 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1160977 + ... + 1161455.

It is an arithmetic number, because the mean of its divisors is an integer number (7927920).

Almost surely, 2^556222464 is an apocalyptic number.

556222464 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556222464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951350400).

556222464 is an abundant number, since it is smaller than the sum of its proper divisors (1346478336).

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

556222464 is an equidigital number, since it uses as much as digits as its factorization.

556222464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 491 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 556222464 is about 23584.3690608844. The cubic root of 556222464 is about 822.3995074361.

The spelling of 556222464 in words is "five hundred fifty-six million, two hundred twenty-two thousand, four hundred sixty-four".