561716 has 18 divisors (see below), whose sum is σ = 1040130. Its totient is φ = 265392.

The previous prime is 561713. The next prime is 561733. The reversal of 561716 is 617165.

It can be written as a sum of positive squares in only one way, i.e., 417316 + 144400 = 646^2 + 380^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1250 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (57785).

2⁵⁶¹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

561716 is a deficient number, since it is larger than the sum of its proper divisors (478414).

561716 is a wasteful number, since it uses less digits than its factorization.

561716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 410 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 561716 is about 749.4771510860. The cubic root of 561716 is about 82.5098121173.

The spelling of 561716 in words is "five hundred sixty-one thousand, seven hundred sixteen".