67745 has 8 divisors (see below), whose sum is σ = 86184. Its totient is φ = 50944.

The previous prime is 67741. The next prime is 67751. The reversal of 67745 is 54776.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 54289 = 116^2 + 233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67745 - 2² = 67741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67741) 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 7 ways as a sum of consecutive naturals, for example, 314 + ... + 483.

It is an arithmetic number, because the mean of its divisors is an integer number (10773).

2⁶⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

67745 is a deficient number, since it is larger than the sum of its proper divisors (18439).

67745 is a wasteful number, since it uses less digits than its factorization.

67745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its digits is 5880, while the sum is 29.

The square root of 67745 is about 260.2786967848. The cubic root of 67745 is about 40.7654664213.

The spelling of 67745 in words is "sixty-seven thousand, seven hundred forty-five".