97985 has 4 divisors (see below), whose sum is σ = 117588. Its totient is φ = 78384.
The previous prime is 97973. The next prime is 97987. The reversal of 97985 is 58979.
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 36481 + 61504 = 191^2 + 248^2 .
It is a cyclic number.
It is not a de Polignac number, because 97985 - 28 = 97729 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a plaindrome in base 14.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97985.
It is not an unprimeable number, because it can be changed into a prime (97987) 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, 9794 + ... + 9803.
It is an arithmetic number, because the mean of its divisors is an integer number (29397).
297985 is an apocalyptic number.
It is an amenable number.
97985 is a deficient number, since it is larger than the sum of its proper divisors (19603).
97985 is a wasteful number, since it uses less digits than its factorization.
97985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19602.
The product of its digits is 22680, while the sum is 38.
The square root of 97985 is about 313.0255580620. The cubic root of 97985 is about 46.1020105371.
The spelling of 97985 in words is "ninety-seven thousand, nine hundred eighty-five".
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