9697691 has 2 divisors, whose sum is σ = 9697692. Its totient is φ = 9697690.

The previous prime is 9697603. The next prime is 9697711. The reversal of 9697691 is 1967969.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9697691 - 2¹⁰ = 9696667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9697091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4848845 + 4848846.

It is an arithmetic number, because the mean of its divisors is an integer number (4848846).

Almost surely, 2^9697691 is an apocalyptic number.

9697691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9697691 is an equidigital number, since it uses as much as digits as its factorization.

9697691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The square root of 9697691 is about 3114.1115908072. Note that the first 3 decimals coincide. The cubic root of 9697691 is about 213.2502000844.

The spelling of 9697691 in words is "nine million, six hundred ninety-seven thousand, six hundred ninety-one".