561708 has 48 divisors (see below), whose sum is σ = 1666560. Its totient is φ = 160272.

The previous prime is 561703. The next prime is 561713. The reversal of 561708 is 807165.

It is an interprime number because it is at equal distance from previous prime (561703) and next prime (561713).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (561703) by changing a digit.

561708 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 385 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (34720).

2⁵⁶¹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833280).

561708 is an abundant number, since it is smaller than the sum of its proper divisors (1104852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561708 is a wasteful number, since it uses less digits than its factorization.

561708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 561708 is about 749.4718140130. The cubic root of 561708 is about 82.5094204119.

It can be divided in two parts, 56 and 1708, that added together give a square (1764 = 42²).

The spelling of 561708 in words is "five hundred sixty-one thousand, seven hundred eight".