99607691 has 8 divisors (see below), whose sum is σ = 101138544. Its totient is φ = 98088160.

The previous prime is 99607667. The next prime is 99607699. The reversal of 99607691 is 19670699.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99607691 - 2¹⁰ = 99606667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99607699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15821 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (12642318).

Almost surely, 2^99607691 is an apocalyptic number.

99607691 is a deficient number, since it is larger than the sum of its proper divisors (1530853).

99607691 is a wasteful number, since it uses less digits than its factorization.

99607691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661.

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

The square root of 99607691 is about 9980.3652738765. The cubic root of 99607691 is about 463.5511088578.

The spelling of 99607691 in words is "ninety-nine million, six hundred seven thousand, six hundred ninety-one".