99860642 has 16 divisors (see below), whose sum is σ = 173536512. Its totient is φ = 42210720.

The previous prime is 99860633. The next prime is 99860671. The reversal of 99860642 is 24606899.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 99860593 and 99860602.

It is an unprimeable number.

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, 47834 + ... + 49877.

It is an arithmetic number, because the mean of its divisors is an integer number (10846032).

Almost surely, 2^99860642 is an apocalyptic number.

99860642 is a deficient number, since it is larger than the sum of its proper divisors (73675870).

99860642 is a wasteful number, since it uses less digits than its factorization.

99860642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97793.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 99860642 is about 9993.0296707255. The cubic root of 99860642 is about 463.9431689462.

The spelling of 99860642 in words is "ninety-nine million, eight hundred sixty thousand, six hundred forty-two".