556717 has 4 divisors (see below), whose sum is σ = 636256. Its totient is φ = 477180.

The previous prime is 556709. The next prime is 556723. The reversal of 556717 is 717655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556717 - 2³ = 556709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39759 + ... + 39772.

It is an arithmetic number, because the mean of its divisors is an integer number (159064).

2⁵⁵⁶⁷¹⁷ is an apocalyptic number.

It is an amenable number.

556717 is a deficient number, since it is larger than the sum of its proper divisors (79539).

556717 is an equidigital number, since it uses as much as digits as its factorization.

556717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79538.

The product of its digits is 7350, while the sum is 31.

The square root of 556717 is about 746.1347063366. The cubic root of 556717 is about 82.2643166352.

The spelling of 556717 in words is "five hundred fifty-six thousand, seven hundred seventeen".