565345 has 16 divisors (see below), whose sum is σ = 780480. Its totient is φ = 388800.

The previous prime is 565343. The next prime is 565361. The reversal of 565345 is 543565.

565345 = T₁₁₅ + T₁₁₆ + ... + T₁₆₉.

It is not a de Polignac number, because 565345 - 2¹ = 565343 is a prime.

It is a super-2 number, since 2×565345² = 639229938050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (565343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775 + ... + 1315.

It is an arithmetic number, because the mean of its divisors is an integer number (48780).

2⁵⁶⁵³⁴⁵ is an apocalyptic number.

565345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

565345 is a deficient number, since it is larger than the sum of its proper divisors (215135).

565345 is a wasteful number, since it uses less digits than its factorization.

565345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its digits is 9000, while the sum is 28.

The square root of 565345 is about 751.8942744828. The cubic root of 565345 is about 82.6871173678.

The spelling of 565345 in words is "five hundred sixty-five thousand, three hundred forty-five".