67565 has 4 divisors (see below), whose sum is σ = 81084. Its totient is φ = 54048.

The previous prime is 67559. The next prime is 67567. The reversal of 67565 is 56576.

67565 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29929 + 37636 = 173^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 67565 - 2¹⁰ = 66541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6752 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (20271).

2⁶⁷⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

67565 is a deficient number, since it is larger than the sum of its proper divisors (13519).

67565 is a wasteful number, since it uses less digits than its factorization.

67565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13518.

The product of its digits is 6300, while the sum is 29.

The square root of 67565 is about 259.9326835933. The cubic root of 67565 is about 40.7293294742.

The spelling of 67565 in words is "sixty-seven thousand, five hundred sixty-five".