10099685 has 8 divisors (see below), whose sum is σ = 12537720. Its totient is φ = 7801024.

The previous prime is 10099681. The next prime is 10099699. The reversal of 10099685 is 58699001.

It is a Cunningham number, because it is equal to 3178²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3632836 + 6466849 = 1906^2 + 2543^2 .

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 10099685 - 2² = 10099681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10099681) 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 in 7 ways as a sum of consecutive naturals, for example, 34682 + ... + 34971.

It is an arithmetic number, because the mean of its divisors is an integer number (1567215).

Almost surely, 2^10099685 is an apocalyptic number.

It is an amenable number.

10099685 is a deficient number, since it is larger than the sum of its proper divisors (2438035).

10099685 is an equidigital number, since it uses as much as digits as its factorization.

10099685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69687.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 10099685 is about 3178.0001573317. Note that the first 3 decimals coincide. The cubic root of 10099685 is about 216.1569860712.

The spelling of 10099685 in words is "ten million, ninety-nine thousand, six hundred eighty-five".