556868844 has 60 divisors (see below), whose sum is σ = 1663738384. Its totient is φ = 159104736.

The previous prime is 556868843. The next prime is 556868849. The reversal of 556868844 is 448868655.

556868844 is a `hidden beast` number, since 556 + 8 + 6 + 8 + 84 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (556868843) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 120499 + ... + 125034.

Almost surely, 2^556868844 is an apocalyptic number.

556868844 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

556868844 is an abundant number, since it is smaller than the sum of its proper divisors (1106869540).

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

556868844 is a wasteful number, since it uses less digits than its factorization.

556868844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245556 (or 245545 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The square root of 556868844 is about 23598.0686497857. The cubic root of 556868844 is about 822.7179512516.

The spelling of 556868844 in words is "five hundred fifty-six million, eight hundred sixty-eight thousand, eight hundred forty-four".