99705210 has 80 divisors (see below), whose sum is σ = 264379680. Its totient is φ = 24064480.

The previous prime is 99705209. The next prime is 99705223. The reversal of 99705210 is 1250799.

It is a super-2 number, since 2×99705210² = 19882257802288200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 439117 + ... + 439343.

It is an arithmetic number, because the mean of its divisors is an integer number (3304746).

Almost surely, 2^99705210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99705210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132189840).

99705210 is an abundant number, since it is smaller than the sum of its proper divisors (164674470).

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

99705210 is a wasteful number, since it uses less digits than its factorization.

99705210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 99705210 is about 9985.2496213164. The cubic root of 99705210 is about 463.7023364580.

The spelling of 99705210 in words is "ninety-nine million, seven hundred five thousand, two hundred ten".