556306 has 8 divisors (see below), whose sum is σ = 837900. Its totient is φ = 277008.

The previous prime is 556289. The next prime is 556313. The reversal of 556306 is 603655.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 7225 = 741^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

556306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300 + ... + 1096.

2⁵⁵⁶³⁰⁶ is an apocalyptic number.

556306 is a deficient number, since it is larger than the sum of its proper divisors (281594).

556306 is a wasteful number, since it uses less digits than its factorization.

556306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 556306 is about 745.8592360493. The cubic root of 556306 is about 82.2440675932.

The spelling of 556306 in words is "five hundred fifty-six thousand, three hundred six".