67717 has 4 divisors (see below), whose sum is σ = 72940. Its totient is φ = 62496.

The previous prime is 67709. The next prime is 67723. The reversal of 67717 is 71776.

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 42436 + 25281 = 206^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 67717 - 2³ = 67709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67757) 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, 2592 + ... + 2617.

It is an arithmetic number, because the mean of its divisors is an integer number (18235).

2⁶⁷⁷¹⁷ is an apocalyptic number.

It is an amenable number.

67717 is a deficient number, since it is larger than the sum of its proper divisors (5223).

67717 is a wasteful number, since it uses less digits than its factorization.

67717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222.

The product of its digits is 2058, while the sum is 28.

The square root of 67717 is about 260.2249027284. The cubic root of 67717 is about 40.7598493261.

It can be divided in two parts, 67 and 717, that added together give a square (784 = 28²).

The spelling of 67717 in words is "sixty-seven thousand, seven hundred seventeen".