67685 has 4 divisors (see below), whose sum is σ = 81228. Its totient is φ = 54144.

The previous prime is 67679. The next prime is 67699. The reversal of 67685 is 58676.

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 49729 + 17956 = 223^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 67685 - 2⁸ = 67429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6764 + ... + 6773.

It is an arithmetic number, because the mean of its divisors is an integer number (20307).

2⁶⁷⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

67685 is a deficient number, since it is larger than the sum of its proper divisors (13543).

67685 is a wasteful number, since it uses less digits than its factorization.

67685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13542.

The product of its digits is 10080, while the sum is 32.

The square root of 67685 is about 260.1634101868. The cubic root of 67685 is about 40.7534278923.

Subtracting from 67685 its reverse (58676), we obtain a palindrome (9009).

The spelling of 67685 in words is "sixty-seven thousand, six hundred eighty-five".