556740806 has 16 divisors (see below), whose sum is σ = 874520064. Its totient is φ = 265320264.

The previous prime is 556740799. The next prime is 556740809. The reversal of 556740806 is 608047655.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556740809) 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, 8366 + ... + 34401.

It is an arithmetic number, because the mean of its divisors is an integer number (54657504).

Almost surely, 2^556740806 is an apocalyptic number.

556740806 is a deficient number, since it is larger than the sum of its proper divisors (317779258).

556740806 is a wasteful number, since it uses less digits than its factorization.

556740806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43075.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 556740806 is about 23595.3556023214. The cubic root of 556740806 is about 822.6548919773.

The spelling of 556740806 in words is "five hundred fifty-six million, seven hundred forty thousand, eight hundred six".