565320220 has 48 divisors (see below), whose sum is σ = 1241210880. Its totient is φ = 215873856.

The previous prime is 565320199. The next prime is 565320317. The reversal of 565320220 is 22023565.

It is a super-2 number, since 2×565320220² = 639173902281696800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339109 + ... + 340771.

It is an arithmetic number, because the mean of its divisors is an integer number (25858560).

Almost surely, 2^565320220 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 565320220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620605440).

565320220 is an abundant number, since it is smaller than the sum of its proper divisors (675890660).

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

565320220 is a wasteful number, since it uses less digits than its factorization.

565320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 565320220 is about 23776.4635721968. The cubic root of 565320220 is about 826.8590924607.

Adding to 565320220 its reverse (22023565), we get a palindrome (587343785).

The spelling of 565320220 in words is "five hundred sixty-five million, three hundred twenty thousand, two hundred twenty".