It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-69997 is a prime.
It is a Chen prime.
It is a plaindrome in base 16.
It is a congruent number.
It is a good prime.
269997 is an apocalyptic number.
It is an amenable number.
69997 is an equidigital number, since it uses as much as digits as its factorization.
69997 is an evil number, because the sum of its binary digits is even.
The square root of 69997 is about 264.5694615786. The cubic root of 69997 is about 41.2122642346.
Subtracting 69997 from its reverse (79996), we obtain a palindrome (9999).
The spelling of 69997 in words is "sixty-nine thousand, nine hundred ninety-seven".