556722 has 24 divisors (see below), whose sum is σ = 1220076. Its totient is φ = 183456.

The previous prime is 556709. The next prime is 556723. The reversal of 556722 is 227655.

It can be written as a sum of positive squares in 2 ways, for example, as 531441 + 25281 = 729^2 + 159^2 .

It is not an unprimeable number, because it can be changed into a prime (556723) by changing a digit.

556722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 2728 + ... + 2924.

2⁵⁵⁶⁷²² is an apocalyptic number.

556722 is an abundant number, since it is smaller than the sum of its proper divisors (663354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556722 is a wasteful number, since it uses less digits than its factorization.

556722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 556722 is about 746.1380569305. The cubic root of 556722 is about 82.2645629126.

The spelling of 556722 in words is "five hundred fifty-six thousand, seven hundred twenty-two".