565000000 has 112 divisors (see below), whose sum is σ = 1413863568. Its totient is φ = 224000000.

The previous prime is 564999983. The next prime is 565000003. The reversal of 565000000 is 565.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 261404224 + 303595776 = 16168^2 + 17424^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4999944 + ... + 5000056.

Almost surely, 2^565000000 is an apocalyptic number.

565000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706931784).

565000000 is an abundant number, since it is smaller than the sum of its proper divisors (848863568).

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

565000000 is an frugal number, since it uses more digits than its factorization.

565000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 565000000 is about 23769.7286480094. The cubic root of 565000000 is about 826.7029409450.

Adding to 565000000 its reverse (565), we get a palindrome (565000565).

Multiplying 565000000 by its reverse (565), we get a square (319225000000 = 565000²).

565000000 divided by its reverse (565) gives a 6-th power (1000000 = 10⁶).

The spelling of 565000000 in words is "five hundred sixty-five million", and thus it is an aban number.