68566 has 4 divisors (see below), whose sum is σ = 102852. Its totient is φ = 34282.

The previous prime is 68543. The next prime is 68567. The reversal of 68566 is 66586.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17140 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (25713).

2⁶⁸⁵⁶⁶ is an apocalyptic number.

68566 is a deficient number, since it is larger than the sum of its proper divisors (34286).

68566 is a wasteful number, since it uses less digits than its factorization.

68566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34285.

The product of its digits is 8640, while the sum is 31.

The square root of 68566 is about 261.8511027282. The cubic root of 68566 is about 40.9294841831.

The spelling of 68566 in words is "sixty-eight thousand, five hundred sixty-six".