556746388 has 24 divisors (see below), whose sum is σ = 1065214080. Its totient is φ = 252510720.

The previous prime is 556746371. The next prime is 556746389. The reversal of 556746388 is 883647655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556746389) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6708 + ... + 34036.

It is an arithmetic number, because the mean of its divisors is an integer number (44383920).

Almost surely, 2^556746388 is an apocalyptic number.

It is an amenable number.

556746388 is a deficient number, since it is larger than the sum of its proper divisors (508467692).

556746388 is a wasteful number, since it uses less digits than its factorization.

556746388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27807 (or 27805 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The square root of 556746388 is about 23595.4738880150. The cubic root of 556746388 is about 822.6576413383.

The spelling of 556746388 in words is "five hundred fifty-six million, seven hundred forty-six thousand, three hundred eighty-eight".