67722 has 8 divisors (see below), whose sum is σ = 135456. Its totient is φ = 22572.
The previous prime is 67709. The next prime is 67723. The reversal of 67722 is 22776.
It is a sphenic number, since it is the product of 3 distinct primes.
67722 is an admirable number.
It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a junction number, because it is equal to n+sod(n) for n = 67692 and 67701.
It is not an unprimeable number, because it can be changed into a prime (67723) by changing a digit.
67722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
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, 5638 + ... + 5649.
It is an arithmetic number, because the mean of its divisors is an integer number (16932).
267722 is an apocalyptic number.
67722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67728).
67722 is a wasteful number, since it uses less digits than its factorization.
67722 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11292.
The product of its digits is 1176, while the sum is 24.
The square root of 67722 is about 260.2345096255. The cubic root of 67722 is about 40.7608524924.
The spelling of 67722 in words is "sixty-seven thousand, seven hundred twenty-two".
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