561762 has 32 divisors (see below), whose sum is σ = 1272960. Its totient is φ = 183600.

The previous prime is 561761. The next prime is 561767. The reversal of 561762 is 267165.

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 (561761) by changing a digit.

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, 5403 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (39780).

2⁵⁶¹⁷⁶² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561762, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636480).

561762 is an abundant number, since it is smaller than the sum of its proper divisors (711198).

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

561762 is a wasteful number, since it uses less digits than its factorization.

561762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 561762 is about 749.5078385181. The cubic root of 561762 is about 82.5120643514.

The spelling of 561762 in words is "five hundred sixty-one thousand, seven hundred sixty-two".