99866020 has 24 divisors (see below), whose sum is σ = 209962368. Its totient is φ = 39900000.

The previous prime is 99866017. The next prime is 99866021. The reversal of 99866020 is 2066899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99866021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18645 + ... + 23395.

It is an arithmetic number, because the mean of its divisors is an integer number (8748432).

Almost surely, 2^99866020 is an apocalyptic number.

It is an amenable number.

99866020 is an abundant number, since it is smaller than the sum of its proper divisors (110096348).

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

99866020 is a wasteful number, since it uses less digits than its factorization.

99866020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811 (or 5809 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 99866020 is about 9993.2987546655. The cubic root of 99866020 is about 463.9514973578.

The spelling of 99866020 in words is "ninety-nine million, eight hundred sixty-six thousand, twenty".