66716 has 12 divisors (see below), whose sum is σ = 125832. Its totient is φ = 30768.
The previous prime is 66713. The next prime is 66721. The reversal of 66716 is 61766.
It is a Harshad number since it is a multiple of its sum of digits (26).
It is a plaindrome in base 9.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66716.
It is not an unprimeable number, because it can be changed into a prime (66713) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 693.
It is an arithmetic number, because the mean of its divisors is an integer number (10486).
266716 is an apocalyptic number.
It is an amenable number.
66716 is a deficient number, since it is larger than the sum of its proper divisors (59116).
66716 is a wasteful number, since it uses less digits than its factorization.
66716 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1300 (or 1298 counting only the distinct ones).
The product of its digits is 1512, while the sum is 26.
The square root of 66716 is about 258.2944056692. The cubic root of 66716 is about 40.5580126810.
Subtracting from 66716 its reverse (61766), we obtain a triangular number (4950 = T99).
The spelling of 66716 in words is "sixty-six thousand, seven hundred sixteen".
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