565020 has 72 divisors (see below), whose sum is σ = 1777776. Its totient is φ = 145152.

The previous prime is 565013. The next prime is 565039. The reversal of 565020 is 20565.

565020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 564984 and 565002.

It is a congruent number.

It is an unprimeable number.

565020 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 23 ways as a sum of consecutive naturals, for example, 7704 + ... + 7776.

2⁵⁶⁵⁰²⁰ 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 565020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888888).

565020 is an abundant number, since it is smaller than the sum of its proper divisors (1212756).

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

565020 is a wasteful number, since it uses less digits than its factorization.

565020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 565020 is about 751.6781226030. The cubic root of 565020 is about 82.6712695437.

Adding to 565020 its reverse (20565), we get a palindrome (585585).

It can be divided in two parts, 5 and 65020, that added together give a square (65025 = 255²).

The spelling of 565020 in words is "five hundred sixty-five thousand, twenty".