99705678 has 8 divisors (see below), whose sum is σ = 199411368. Its totient is φ = 33235224.

The previous prime is 99705653. The next prime is 99705701. The reversal of 99705678 is 87650799.

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

99705678 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 99705678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8308801 + ... + 8308812.

It is an arithmetic number, because the mean of its divisors is an integer number (24926421).

Almost surely, 2^99705678 is an apocalyptic number.

99705678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99705678 is a wasteful number, since it uses less digits than its factorization.

99705678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16617618.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 99705678 is about 9985.2730558558. The cubic root of 99705678 is about 463.7030619713.

The spelling of 99705678 in words is "ninety-nine million, seven hundred five thousand, six hundred seventy-eight".