10009691 has 2 divisors, whose sum is σ = 10009692. Its totient is φ = 10009690.

The previous prime is 10009679. The next prime is 10009709. The reversal of 10009691 is 19690001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10009691 - 2⁶ = 10009627 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10009691.

It is not a weakly prime, because it can be changed into another prime (10009091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5004845 + 5004846.

It is an arithmetic number, because the mean of its divisors is an integer number (5004846).

Almost surely, 2^10009691 is an apocalyptic number.

10009691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10009691 is an equidigital number, since it uses as much as digits as its factorization.

10009691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 10009691 is about 3163.8095707549. The cubic root of 10009691 is about 215.5130419556.

Adding to 10009691 its reverse (19690001), we get a palindrome (29699692).

The spelling of 10009691 in words is "ten million, nine thousand, six hundred ninety-one".