9906697 has 4 divisors (see below), whose sum is σ = 9916740. Its totient is φ = 9896656.

The previous prime is 9906691. The next prime is 9906703. The reversal of 9906697 is 7966099.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7966099 = 67 ⋅118897.

It is an interprime number because it is at equal distance from previous prime (9906691) and next prime (9906703).

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 8874441 = 1016^2 + 2979^2 .

It is a cyclic number.

It is not a de Polignac number, because 9906697 - 2⁷ = 9906569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906691) 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, 3358 + ... + 5575.

It is an arithmetic number, because the mean of its divisors is an integer number (2479185).

Almost surely, 2^9906697 is an apocalyptic number.

It is an amenable number.

9906697 is a deficient number, since it is larger than the sum of its proper divisors (10043).

9906697 is a wasteful number, since it uses less digits than its factorization.

9906697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10042.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 9906697 is about 3147.4905877540. The cubic root of 9906697 is about 214.7713234758.

The spelling of 9906697 in words is "nine million, nine hundred six thousand, six hundred ninety-seven".