99996691 has 2 divisors, whose sum is σ = 99996692. Its totient is φ = 99996690.

The previous prime is 99996679. The next prime is 99996697. The reversal of 99996691 is 19669999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99996691 - 2⁹ = 99996179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99996697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49998345 + 49998346.

It is an arithmetic number, because the mean of its divisors is an integer number (49998346).

Almost surely, 2^99996691 is an apocalyptic number.

99996691 is a deficient number, since it is larger than the sum of its proper divisors (1).

99996691 is an equidigital number, since it uses as much as digits as its factorization.

99996691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2125764, while the sum is 58.

The square root of 99996691 is about 9999.8345486313. The cubic root of 99996691 is about 464.1537636323.

The spelling of 99996691 in words is "ninety-nine million, nine hundred ninety-six thousand, six hundred ninety-one".