556739 has 8 divisors (see below), whose sum is σ = 587328. Its totient is φ = 527040.

The previous prime is 556727. The next prime is 556741. The reversal of 556739 is 937655.

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

It is a cyclic number.

It is not a de Polignac number, because 556739 - 2⁴ = 556723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 556699 and 556708.

It is not an unprimeable number, because it can be changed into a prime (556709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334 + ... + 1700.

It is an arithmetic number, because the mean of its divisors is an integer number (73416).

2⁵⁵⁶⁷³⁹ is an apocalyptic number.

556739 is a deficient number, since it is larger than the sum of its proper divisors (30589).

556739 is a wasteful number, since it uses less digits than its factorization.

556739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 28350, while the sum is 35.

The square root of 556739 is about 746.1494488372. The cubic root of 556739 is about 82.2654002445.

The spelling of 556739 in words is "five hundred fifty-six thousand, seven hundred thirty-nine".