561717 has 12 divisors (see below), whose sum is σ = 873964. Its totient is φ = 345600.

The previous prime is 561713. The next prime is 561733. The reversal of 561717 is 717165.

It can be written as a sum of positive squares in 2 ways, for example, as 194481 + 367236 = 441^2 + 606^2 .

It is not a de Polignac number, because 561717 - 2² = 561713 is a prime.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2284 + ... + 2517.

2⁵⁶¹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

561717 is a deficient number, since it is larger than the sum of its proper divisors (312247).

561717 is a wasteful number, since it uses less digits than its factorization.

561717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820 (or 4817 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 561717 is about 749.4778182175. The cubic root of 561717 is about 82.5098610802.

The spelling of 561717 in words is "five hundred sixty-one thousand, seven hundred seventeen".