556737656 has 16 divisors (see below), whose sum is σ = 1048366800. Its totient is φ = 277173184.

The previous prime is 556737619. The next prime is 556737659. The reversal of 556737656 is 656737655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556737659) 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 3 ways as a sum of consecutive naturals, for example, 147476 + ... + 151203.

It is an arithmetic number, because the mean of its divisors is an integer number (65522925).

Almost surely, 2^556737656 is an apocalyptic number.

It is an amenable number.

556737656 is a deficient number, since it is larger than the sum of its proper divisors (491629144).

556737656 is a wasteful number, since it uses less digits than its factorization.

556737656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298918 (or 298914 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 50.

The square root of 556737656 is about 23595.2888518026. The cubic root of 556737656 is about 822.6533404667.

Subtracting 556737656 from its reverse (656737655), we obtain a palindrome (99999999).

The spelling of 556737656 in words is "five hundred fifty-six million, seven hundred thirty-seven thousand, six hundred fifty-six".