561682 has 16 divisors (see below), whose sum is σ = 931104. Its totient is φ = 254100.

The previous prime is 561667. The next prime is 561703. The reversal of 561682 is 286165.

561682 is nontrivially palindromic in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 561682.

It is an unprimeable number.

561682 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2557 + ... + 2767.

It is an arithmetic number, because the mean of its divisors is an integer number (58194).

2⁵⁶¹⁶⁸² is an apocalyptic number.

561682 is a deficient number, since it is larger than the sum of its proper divisors (369422).

561682 is a wasteful number, since it uses less digits than its factorization.

561682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 224 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 561682 is about 749.4544682634. The cubic root of 561682 is about 82.5081473435.

The spelling of 561682 in words is "five hundred sixty-one thousand, six hundred eighty-two".