99861166 has 8 divisors (see below), whose sum is σ = 149917320. Its totient is φ = 49888728.

The previous prime is 99861163. The next prime is 99861173. The reversal of 99861166 is 66116899.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99861161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17856 + ... + 22771.

It is an arithmetic number, because the mean of its divisors is an integer number (18739665).

Almost surely, 2^99861166 is an apocalyptic number.

99861166 is a deficient number, since it is larger than the sum of its proper divisors (50056154).

99861166 is a wasteful number, since it uses less digits than its factorization.

99861166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41858.

The product of its digits is 139968, while the sum is 46.

The square root of 99861166 is about 9993.0558889661. The cubic root of 99861166 is about 463.9439804298.

The spelling of 99861166 in words is "ninety-nine million, eight hundred sixty-one thousand, one hundred sixty-six".