67105 has 4 divisors (see below), whose sum is σ = 80532. Its totient is φ = 53680.

The previous prime is 67103. The next prime is 67121. The reversal of 67105 is 50176.

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 46656 + 20449 = 216^2 + 143^2 .

It is not a de Polignac number, because 67105 - 2¹ = 67103 is a prime.

It is a Duffinian number.

67105 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (67103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6706 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (20133).

2⁶⁷¹⁰⁵ is an apocalyptic number.

It is an amenable number.

67105 is a deficient number, since it is larger than the sum of its proper divisors (13427).

67105 is a wasteful number, since it uses less digits than its factorization.

67105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 67105 is about 259.0463279029. The cubic root of 67105 is about 40.6366869729.

The spelling of 67105 in words is "sixty-seven thousand, one hundred five".