It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is a Duffinian number.
Almost surely, 29999697 is an apocalyptic number.
It is an amenable number.
9999697 is a wasteful number, since it uses less digits than its factorization.
9999697 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6638.
The square root of 9999697 is about 3162.2297512989. The cubic root of 9999697 is about 215.4412930022.
The spelling of 9999697 in words is "nine million, nine hundred ninety-nine thousand, six hundred ninety-seven".