99818679 has 16 divisors (see below), whose sum is σ = 141285600. Its totient is φ = 62469120.

The previous prime is 99818659. The next prime is 99818717. The reversal of 99818679 is 97681899.

It is not a de Polignac number, because 99818679 - 2¹⁵ = 99785911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99818629) 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 15 ways as a sum of consecutive naturals, for example, 19147 + ... + 23795.

It is an arithmetic number, because the mean of its divisors is an integer number (8830350).

Almost surely, 2^99818679 is an apocalyptic number.

99818679 is a deficient number, since it is larger than the sum of its proper divisors (41466921).

99818679 is a wasteful number, since it uses less digits than its factorization.

99818679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090.

The product of its digits is 1959552, while the sum is 57.

The square root of 99818679 is about 9990.9298366068. The cubic root of 99818679 is about 463.8781744552.

The spelling of 99818679 in words is "ninety-nine million, eight hundred eighteen thousand, six hundred seventy-nine".