561069 has 12 divisors (see below), whose sum is σ = 836992. Its totient is φ = 361800.

The previous prime is 561061. The next prime is 561079. The reversal of 561069 is 960165.

It is not a de Polignac number, because 561069 - 2³ = 561061 is a prime.

It is a super-2 number, since 2×561069² = 629596845522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561061) 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 11 ways as a sum of consecutive naturals, for example, 727 + ... + 1284.

2⁵⁶¹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

561069 is a deficient number, since it is larger than the sum of its proper divisors (275923).

561069 is a wasteful number, since it uses less digits than its factorization.

561069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 2045 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 561069 is about 749.0453924830. The cubic root of 561069 is about 82.4781209199.

The spelling of 561069 in words is "five hundred sixty-one thousand, sixty-nine".