561884 has 12 divisors (see below), whose sum is σ = 1041264. Its totient is φ = 264384.

The previous prime is 561839. The next prime is 561907. The reversal of 561884 is 488165.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 561884.

It is a congruent number.

It is an unprimeable number.

561884 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 3 ways as a sum of consecutive naturals, for example, 4064 + ... + 4199.

It is an arithmetic number, because the mean of its divisors is an integer number (86772).

2⁵⁶¹⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

561884 is a deficient number, since it is larger than the sum of its proper divisors (479380).

561884 is a wasteful number, since it uses less digits than its factorization.

561884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8282 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 561884 is about 749.5892208403. The cubic root of 561884 is about 82.5180370725.

The spelling of 561884 in words is "five hundred sixty-one thousand, eight hundred eighty-four".